ADDED   SRM/548-U/1A.cpp
Index: SRM/548-U/1A.cpp
==================================================================
--- SRM/548-U/1A.cpp
+++ SRM/548-U/1A.cpp
@@ -0,0 +1,97 @@
+#include <iostream>
+#include <sstream>
+#include <iomanip>
+#include <vector>
+#include <string>
+#include <map>
+#include <set>
+#include <algorithm>
+#include <numeric>
+#include <iterator>
+#include <functional>
+#include <complex>
+#include <queue>
+#include <stack>
+#include <cmath>
+#include <cassert>
+using namespace std;
+typedef long long LL;
+typedef long double LD;
+typedef complex<LD> CMP;
+
+class KingdomAndTrees { public:
+	int minLevel(vector <int> heights)
+	{
+		// (L,R]
+		int L = -1;
+		int R = 1000000000;
+		while(R-L>1)
+		{
+			int C = (L+R)/2;
+			(possible(C,heights) ? R : L) = C;
+		}
+		return R;
+	}
+
+	bool possible(int C, const vector<int>& h)
+	{
+		int last = max(1, h[0]-C);
+		for(int i=1; i<h.size(); ++i)
+		{
+			if( !(last < h[i]+C) )
+				return false;
+			last = max(last+1, h[i]-C);
+		}
+		return true;
+	}
+};
+
+// BEGIN CUT HERE
+#include <ctime>
+double start_time; string timer()
+ { ostringstream os; os << " (" << int((clock()-start_time)/CLOCKS_PER_SEC*1000) << " msec)"; return os.str(); }
+template<typename T> ostream& operator<<(ostream& os, const vector<T>& v)
+ { os << "{ ";
+   for(typename vector<T>::const_iterator it=v.begin(); it!=v.end(); ++it)
+   os << '\"' << *it << '\"' << (it+1==v.end() ? "" : ", "); os << " }"; return os; }
+void verify_case(const int& Expected, const int& Received) {
+ bool ok = (Expected == Received);
+ if(ok) cerr << "PASSED" << timer() << endl;  else { cerr << "FAILED" << timer() << endl;
+ cerr << "\to: \"" << Expected << '\"' << endl << "\tx: \"" << Received << '\"' << endl; } }
+#define CASE(N) {cerr << "Test Case #" << N << "..." << flush; start_time=clock();
+#define END	 verify_case(_, KingdomAndTrees().minLevel(heights));}
+int main(){
+
+CASE(0)
+	int heights_[] = {9, 5, 11};
+	  vector <int> heights(heights_, heights_+sizeof(heights_)/sizeof(*heights_)); 
+	int _ = 3; 
+END
+CASE(1)
+	int heights_[] = {5, 8};
+	  vector <int> heights(heights_, heights_+sizeof(heights_)/sizeof(*heights_)); 
+	int _ = 0; 
+END
+CASE(2)
+	int heights_[] = {1, 1, 1, 1, 1};
+	  vector <int> heights(heights_, heights_+sizeof(heights_)/sizeof(*heights_)); 
+	int _ = 4; 
+END
+CASE(3)
+	int heights_[] = {548, 47, 58, 250, 2012};
+	  vector <int> heights(heights_, heights_+sizeof(heights_)/sizeof(*heights_)); 
+	int _ = 251; 
+END
+CASE(4)
+	int heights_[] = {337994619,837714986,7014426,516695490,268514071,590654553,940024470,79308071,891444369,231310251,172567010,283491054,951215936,92716118,911004789,896372476,617116292,874491895,120052194,635772188,938392572,466867891,418351197,278475278,635224368,38779964,762367612,370214557,20108108,314281202,644947239,868648377,617056931,542328796,280916141,281585869,895175595,529854516,862330692,733665485,173060292,579136324,401396401,303236137,161627936,410922706,172892990,840336279,848958999,849348801};
+	  vector <int> heights(heights_, heights_+sizeof(heights_)/sizeof(*heights_)); 
+	int _ = -1; 
+END
+CASE(5)
+	int heights_[] = {1000000000,1};
+	  vector <int> heights(heights_, heights_+sizeof(heights_)/sizeof(*heights_)); 
+	int _ = 500000000; 
+END
+
+}
+// END CUT HERE

ADDED   SRM/548-U/1B.cpp
Index: SRM/548-U/1B.cpp
==================================================================
--- SRM/548-U/1B.cpp
+++ SRM/548-U/1B.cpp
@@ -0,0 +1,199 @@
+#include <iostream>
+#include <sstream>
+#include <iomanip>
+#include <vector>
+#include <string>
+#include <map>
+#include <set>
+#include <algorithm>
+#include <numeric>
+#include <iterator>
+#include <functional>
+#include <complex>
+#include <queue>
+#include <stack>
+#include <cmath>
+#include <cassert>
+using namespace std;
+typedef long long LL;
+typedef long double LD;
+typedef complex<LD> CMP;
+
+template<typename T>
+struct DP3
+{
+	int N1, N2, N3;
+	vector<T> data;
+	DP3(int N1, int N2, int N3, const T& t = T())
+		: N1(N1), N2(N2), N3(N3), data(N1*N2*N3, t) { assert(data.size()*sizeof(T)<(1<<26)); }
+	T& operator()(int i1, int i2, int i3)
+		{ return data[ ((i1*N2)+i2)*N3+i3 ]; }
+	void swap(DP3& rhs)
+		{ data.swap(rhs.data); }
+};
+
+struct cmp {
+	int N;
+	cmp(int N):N(N){}
+	bool operator()(int a, int b) const
+	{
+		if( abs(2*a - N*N) != abs(2*b - N*N) )
+			return abs(2*a - N*N) < abs(2*b - N*N);
+		return a < b;
+	}
+};
+class KingdomAndDice { public:
+	double newFairness(vector <int> firstDie, vector <int> secondDie, int X)
+	{
+		int N = firstDie.size();
+		sort(secondDie.begin(), secondDie.end());
+
+		vector<int> choice;
+		{
+			choice.push_back(N);
+			for(int i=0; i+1<N; ++i)
+				choice.push_back(secondDie[i+1]-secondDie[i]-1);
+			choice.push_back(X-secondDie.back());
+		}
+		int base = 0;
+		{
+			for(int k=0; k<N; ++k)
+				if( firstDie[k]!=0 && firstDie[k]<secondDie[0] ) {
+					choice[0] --;
+					base += 0;
+				}
+			for(int i=0; i+1<N; ++i)
+				for(int k=0; k<N; ++k)
+					if( firstDie[k]!=0 && secondDie[i]<firstDie[k] && firstDie[k]<secondDie[i+1] ) {
+						choice[i+1] --;
+						base += i+1;
+					}
+			for(int k=0; k<N; ++k)
+				if( firstDie[k]!=0 && secondDie[N-1]<firstDie[k] ) {
+					choice[N] --;
+					base += N;
+				}
+		}
+		return solve(N, base, choice, count(firstDie.begin(), firstDie.end(), 0));
+	}
+
+	double solve(int N, int base, const vector<int>& choice, int K)
+	{
+		DP3<int> dp(N+1, K+1, N*N+1);
+		for(int i=0; i<=N; ++i)
+		for(int p=0; p<=K; ++p)
+		for(int sum=0; sum<=N*N; ++sum)
+		{
+			if(i==0)
+			{
+				dp(i,p,sum) = (sum==base && p<=choice[i]);
+			}
+			else
+			{
+				bool b = false;
+				for(int z=0; z<=p && z<=choice[i]; ++z)
+					if(sum>=i*z)
+						b = b | dp(i-1,p-z,sum-i*z);
+				dp(i,p,sum) = b;
+			}
+		}
+
+		vector<int> cand;
+		for(int sum=0; sum<=N*N; ++sum)
+			if( dp(N,K,sum) )
+				cand.push_back( sum );
+		return *min_element(cand.begin(), cand.end(), cmp(N)) / double(N*N);
+	}
+};
+
+// BEGIN CUT HERE
+#include <ctime>
+double start_time; string timer()
+ { ostringstream os; os << " (" << int((clock()-start_time)/CLOCKS_PER_SEC*1000) << " msec)"; return os.str(); }
+template<typename T> ostream& operator<<(ostream& os, const vector<T>& v)
+ { os << "{ ";
+   for(typename vector<T>::const_iterator it=v.begin(); it!=v.end(); ++it)
+   os << '\"' << *it << '\"' << (it+1==v.end() ? "" : ", "); os << " }"; return os; }
+void verify_case(const double& Expected, const double& Received) {
+ bool ok = (abs(Expected - Received) < 1e-9);
+ if(ok) cerr << "PASSED" << timer() << endl;  else { cerr << "FAILED" << timer() << endl;
+ cerr << "\to: \"" << Expected << '\"' << endl << "\tx: \"" << Received << '\"' << endl; } }
+#define CASE(N) {cerr << "Test Case #" << N << "..." << flush; start_time=clock();
+#define END	 verify_case(_, KingdomAndDice().newFairness(firstDie, secondDie, X));}
+int main(){
+
+CASE(0)
+	int firstDie_[] = {0, 2, 7, 0};
+	  vector <int> firstDie(firstDie_, firstDie_+sizeof(firstDie_)/sizeof(*firstDie_)); 
+	int secondDie_[] = {6, 3, 8, 10};
+	  vector <int> secondDie(secondDie_, secondDie_+sizeof(secondDie_)/sizeof(*secondDie_)); 
+	int X = 12; 
+	double _ = 0.4375; 
+END
+CASE(1)
+	int firstDie_[] = {0, 2, 7, 0};
+	  vector <int> firstDie(firstDie_, firstDie_+sizeof(firstDie_)/sizeof(*firstDie_)); 
+	int secondDie_[] = {6, 3, 8, 10};
+	  vector <int> secondDie(secondDie_, secondDie_+sizeof(secondDie_)/sizeof(*secondDie_)); 
+	int X = 10; 
+	double _ = 0.375; 
+END
+CASE(2)
+	int firstDie_[] = {0, 0};
+	  vector <int> firstDie(firstDie_, firstDie_+sizeof(firstDie_)/sizeof(*firstDie_)); 
+	int secondDie_[] = {5, 8};
+	  vector <int> secondDie(secondDie_, secondDie_+sizeof(secondDie_)/sizeof(*secondDie_)); 
+	int X = 47; 
+	double _ = 0.5; 
+END
+CASE(3)
+	int firstDie_[] = {19, 50, 4};
+	  vector <int> firstDie(firstDie_, firstDie_+sizeof(firstDie_)/sizeof(*firstDie_)); 
+	int secondDie_[] = {26, 100, 37};
+	  vector <int> secondDie(secondDie_, secondDie_+sizeof(secondDie_)/sizeof(*secondDie_)); 
+	int X = 1000; 
+	double _ = 0.2222222222222222; 
+END
+CASE(4)
+	int firstDie_[] = {6371, 0, 6256, 1852, 0, 0, 6317, 3004, 5218, 9012};
+	  vector <int> firstDie(firstDie_, firstDie_+sizeof(firstDie_)/sizeof(*firstDie_)); 
+	int secondDie_[] = {1557, 6318, 1560, 4519, 2012, 6316, 6315, 1559, 8215, 1561};
+	  vector <int> secondDie(secondDie_, secondDie_+sizeof(secondDie_)/sizeof(*secondDie_)); 
+	int X = 10000; 
+	double _ = 0.49; 
+END
+CASE(5)
+	int firstDie_[] = {278130165,933636493,607327308,19369203,439158229,445295066,370731340,551180273,163280323,359800317,834663837,108871632,362106962,921853660,145507840,284869553,246938492,379648759,956330140,525562675,251028940,270135098,862786589,513909283,412651940,499422899,724171306,922270222,938213346,61418124,248820926,891527589,812074952,155495258,23280465,761818758,328244247,975585791,108105856,414583437,424242761,168720992,585728188,0,0,0,0,0,0,0};
+	  vector <int> firstDie(firstDie_, firstDie_+sizeof(firstDie_)/sizeof(*firstDie_)); 
+	int secondDie_[] = {475017760,773630717,985005264,963668637,320647204,665487259,585555327,272107932,203172682,57845645,311126817,496577583,834654861,77335024,405827438,231342594,943378345,971851607,455697802,119475931,551079372,838525393,192593102,990828850,382044077,590561977,229071016,962163538,621629435,727621063,109926457,152882146,9199017,615779540,160320904,216276208,675743894,414050471,126645085,238141513,151262148,280509327,923103663,125699296,790073355,738597671,864455279,384833125,510401421,219630179};
+	  vector <int> secondDie(secondDie_, secondDie_+sizeof(secondDie_)/sizeof(*secondDie_)); 
+	int X = 1000000000; 
+	double _ = 0.5; 
+END
+CASE(6)
+	int firstDie_[] = {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0};
+	  vector <int> firstDie(firstDie_, firstDie_+sizeof(firstDie_)/sizeof(*firstDie_)); 
+	int secondDie_[] = {475017760,773630717,985005264,963668637,320647204,665487259,585555327,272107932,203172682,57845645,311126817,496577583,834654861,77335024,405827438,231342594,943378345,971851607,455697802,119475931,551079372,838525393,192593102,990828850,382044077,590561977,229071016,962163538,621629435,727621063,109926457,152882146,9199017,615779540,160320904,216276208,675743894,414050471,126645085,238141513,151262148,280509327,923103663,125699296,790073355,738597671,864455279,384833125,510401421,219630179};
+	  vector <int> secondDie(secondDie_, secondDie_+sizeof(secondDie_)/sizeof(*secondDie_)); 
+	int X = 1000000000; 
+	double _ = 0.5; 
+END
+CASE(6)
+	int firstDie_[] = {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0};
+	  vector <int> firstDie(firstDie_, firstDie_+sizeof(firstDie_)/sizeof(*firstDie_)); 
+	int secondDie_[] = {1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50};
+	  vector <int> secondDie(secondDie_, secondDie_+sizeof(secondDie_)/sizeof(*secondDie_)); 
+	int X = 100;
+	double _ = 0.5; 
+END
+CASE(7)
+int firstDie_[] = {0,0};
+	  vector <int> firstDie(firstDie_, firstDie_+sizeof(firstDie_)/sizeof(*firstDie_)); 
+	  int secondDie_[] = {1,2};
+	  vector <int> secondDie(secondDie_, secondDie_+sizeof(secondDie_)/sizeof(*secondDie_)); 
+	int X = 4; 
+	double _ = 1; 
+END
+
+}
+// END CUT HERE