ADDED   SRM/625-U/1A.cpp
Index: SRM/625-U/1A.cpp
==================================================================
--- SRM/625-U/1A.cpp
+++ SRM/625-U/1A.cpp
@@ -0,0 +1,100 @@
+#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>
+#include <tuple>
+using namespace std;
+typedef long long LL;
+typedef complex<double> CMP;
+
+class BuildingHeights { public:
+	int minimum(vector <int> heights)
+	{
+		const int N = heights.size();
+		sort(heights.begin(), heights.end());
+		vector<int> sum(N+1);
+		partial_sum(heights.begin(), heights.end(), sum.begin()+1);
+
+		vector<int> A(N, 0x7fffffff);
+		for(int s=0; s<N; ++s)
+		for(int e=s+1; e<=N; ++e)
+		{
+			int M = e-s;
+			int Max = heights[e-1];
+			int Sum = sum[e] - sum[s];
+			A[M-1] = min(A[M-1], Max*M-Sum);
+		}
+
+		int ans = 0;
+		for(int a: A) ans ^= a;
+		return ans;
+	}
+};
+
+// 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(_, BuildingHeights().minimum(heights));}
+int main(){
+
+CASE(0)
+	int heights_[] = {1, 5, 4, 3, 8};
+	  vector <int> heights(heights_, heights_+sizeof(heights_)/sizeof(*heights_)); 
+	int _ = 22; 
+END
+CASE(1)
+	int heights_[] = {1, 2, 3};
+	  vector <int> heights(heights_, heights_+sizeof(heights_)/sizeof(*heights_)); 
+	int _ = 2; 
+END
+CASE(2)
+	int heights_[] = {3, 4, 1, 6, 8, 1};
+	  vector <int> heights(heights_, heights_+sizeof(heights_)/sizeof(*heights_)); 
+	int _ = 21; 
+END
+CASE(3)
+	int heights_[] = {990, 20, 2359, 1667, 51, 2455, 1659, 1093, 2015, 205, 656, 752, 1760, 1594, 857,
+ 2033, 1868, 1932, 2408, 1518, 91, 2220, 1696, 1552, 933, 143, 1888, 1261, 2298, 1975,
+ 929, 2139, 1994, 2139, 158, 896, 2093, 1816, 841, 459, 2020, 1496, 63, 131, 589, 919,
+ 1015, 1308, 350, 922, 326, 1792, 641, 2021, 843, 425, 1015, 231, 1685, 2165, 1057,
+ 1465, 655, 550, 1103, 812, 297, 2048, 1479, 1137, 6, 2350, 1484, 1420, 1332, 925, 2338,
+ 1198, 2232, 1539, 2119, 57, 830, 1611, 929, 525, 888};
+	  vector <int> heights(heights_, heights_+sizeof(heights_)/sizeof(*heights_)); 
+	int _ = 56068; 
+END
+/*
+CASE(4)
+	int heights_[] = ;
+	  vector <int> heights(heights_, heights_+sizeof(heights_)/sizeof(*heights_)); 
+	int _ = ; 
+END
+CASE(5)
+	int heights_[] = ;
+	  vector <int> heights(heights_, heights_+sizeof(heights_)/sizeof(*heights_)); 
+	int _ = ; 
+END
+*/
+}
+// END CUT HERE

ADDED   SRM/625-U/1B.cpp
Index: SRM/625-U/1B.cpp
==================================================================
--- SRM/625-U/1B.cpp
+++ SRM/625-U/1B.cpp
cannot compute difference between binary files

ADDED   SRM/625-U/1C-U.cpp
Index: SRM/625-U/1C-U.cpp
==================================================================
--- SRM/625-U/1C-U.cpp
+++ SRM/625-U/1C-U.cpp
@@ -0,0 +1,148 @@
+#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>
+#include <tuple>
+using namespace std;
+typedef long long LL;
+typedef complex<double> CMP;
+
+class TreeColoring { public:
+	long long color(int N, int Q, int startSeed, int threshold, int maxDist)
+	{
+		vector<int> parent(N-1), distance(N-1), queryType(Q), queryNode(Q);
+		{
+			int curValue = startSeed;
+			function<int()> genNextRandom = [&]() {
+				curValue = (curValue * 1999 + 17) % 1000003;
+				return curValue;
+			};
+			for(int i=0; i<N-1; i++) {
+				distance[i] = genNextRandom() % maxDist;
+				parent[i] = genNextRandom();
+				if (parent[i] < threshold)
+					parent[i] = i;
+				else
+					parent[i] = parent[i] % (i + 1);
+			}
+			for (int i=0; i<Q; i++) {
+				queryType[i] = genNextRandom() % 2 + 1;
+				queryNode[i] = genNextRandom() % N;
+			}
+		}
+
+		// Doubled parents for LCA and distance to the root
+		const int INVALID = -1;
+		vector<vector<int>> p(N, vector<int>(17, INVALID));
+		vector<int> d(N);
+		for(int v=1; v<N; ++v) {
+			p[v][1] = parent[v-1];
+			d[v] = d[p[v][1]] + distance[v-1];
+		}
+		for(int d=2,k=2; k<17; d*=2,k++)
+			for(int v=0; v<N; ++v) {
+				int u = p[v][k-1];
+				if(u != INVALID)
+					p[v][k] = p[u][k-1];
+			}
+
+		return -1;
+	}
+};
+
+// 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 long long& Expected, const long long& 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(_, TreeColoring().color(N, Q, startSeed, threshold, maxDist));}
+int main(){
+
+CASE(0)
+	int N = 4; 
+	int Q = 6; 
+	int startSeed = 15; 
+	int threshold = 2; 
+	int maxDist = 5; 
+	long long _ = 7LL; 
+END
+CASE(1)
+	int N = 4; 
+	int Q = 5; 
+	int startSeed = 2; 
+	int threshold = 9; 
+	int maxDist = 10; 
+	long long _ = 30LL; 
+END
+CASE(2)
+	int N = 8; 
+	int Q = 8; 
+	int startSeed = 3; 
+	int threshold = 5; 
+	int maxDist = 7; 
+	long long _ = 6LL; 
+END
+CASE(3)
+	int N = 14750; 
+	int Q = 50; 
+	int startSeed = 29750; 
+	int threshold = 1157; 
+	int maxDist = 21610; 
+	long long _ = 2537640LL; 
+END
+CASE(4)
+	int N = 100000; 
+	int Q = 100000; 
+	int startSeed = 123456; 
+	int threshold = 500000; 
+	int maxDist = 474747; 
+	long long _ = 726915029831LL; 
+END
+CASE(5)
+	int N = 100000; 
+	int Q = 100000; 
+	int startSeed = 654321; 
+	int threshold = 1000003; 
+	int maxDist = 1000003; 
+	long long _ = 562600687570528LL; 
+END
+/*
+CASE(6)
+	int N = ; 
+	int Q = ; 
+	int startSeed = ; 
+	int threshold = ; 
+	int maxDist = ; 
+	long long _ = LL; 
+END
+CASE(7)
+	int N = ; 
+	int Q = ; 
+	int startSeed = ; 
+	int threshold = ; 
+	int maxDist = ; 
+	long long _ = LL; 
+END
+*/
+}
+// END CUT HERE