ADDED   SRM/TCO15-2B/1A.cpp
Index: SRM/TCO15-2B/1A.cpp
==================================================================
--- SRM/TCO15-2B/1A.cpp
+++ SRM/TCO15-2B/1A.cpp
@@ -0,0 +1,86 @@
+#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 Bitwisdom { public:
+	double expectedActions(vector <int> p)
+	{
+		double e = 0;
+		for(int i=1; i<p.size(); ++i) {
+			e += (p[i]/100.0) * (100-p[i-1])/100.0
+				+ (p[i-1]/100.0) * (100-p[i])/100.0;
+		}
+		double q = 1.0;
+		for(int i=0; i<p.size(); ++i)
+			q *= (p[i]/100.0);
+		return e + q;
+	}
+};
+
+// 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(_, Bitwisdom().expectedActions(p));}
+int main(){
+
+CASE(0)
+	int p_[] = {100, 100, 100};
+	  vector <int> p(p_, p_+sizeof(p_)/sizeof(*p_)); 
+	double _ = 1.0; 
+END
+CASE(1)
+	int p_[] = {50, 50};
+	  vector <int> p(p_, p_+sizeof(p_)/sizeof(*p_)); 
+	double _ = 0.75; 
+END
+CASE(2)
+	int p_[] = {0, 40, 50, 60};
+	  vector <int> p(p_, p_+sizeof(p_)/sizeof(*p_)); 
+	double _ = 1.4; 
+END
+CASE(3)
+	int p_[] = {37, 63, 23, 94, 12};
+	  vector <int> p(p_, p_+sizeof(p_)/sizeof(*p_)); 
+	double _ = 2.6820475464; 
+END
+/*
+CASE(4)
+	int p_[] = ;
+	  vector <int> p(p_, p_+sizeof(p_)/sizeof(*p_)); 
+	double _ = ; 
+END
+CASE(5)
+	int p_[] = ;
+	  vector <int> p(p_, p_+sizeof(p_)/sizeof(*p_)); 
+	double _ = ; 
+END
+*/
+}
+// END CUT HERE

ADDED   SRM/TCO15-2B/1B.cpp
Index: SRM/TCO15-2B/1B.cpp
==================================================================
--- SRM/TCO15-2B/1B.cpp
+++ SRM/TCO15-2B/1B.cpp
@@ -0,0 +1,204 @@
+#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 Balance { public:
+	string canTransform(vector <string> initial, vector <string> target)
+	{
+		auto ti = gen_tree(initial);
+		auto tt = gen_tree(target);
+		return tree_eq(ti, tt) ? "Possible" : "Impossible";
+	}
+
+	vector<vector<int>> gen_tree(vector<string> s) {
+		s.push_back(string(s[0].size(), '#'));
+		s.insert(s.begin(), string(s[0].size(), '#'));
+		for(auto& si: s)
+			si = '#'+si+'#';
+
+		const int H = s.size(), W = s[0].size();
+		const int NOTYET = 0x7fffffff;
+
+		vector<vector<int>> tree;
+		vector<vector<int>> parent_cand(H, vector<int>(W, -1));
+		vector<vector<int>> color(H, vector<int>(W, NOTYET));
+		for(int y=0; y<H; ++y)
+		for(int x=0; x<W; ++x)
+		if(color[y][x]==NOTYET) {
+			const char ME = s[y][x];
+			int newId = tree.size();
+			tree.resize(newId+1);
+
+			// BFS
+			set<int> tonari;
+
+			queue<pair<int,int>> Q;
+			color[y][x] = newId;
+			Q.emplace(y, x);
+			while(!Q.empty()) {
+				int yy = Q.front().first;
+				int xx = Q.front().second;
+				Q.pop();
+
+				int dx[] = {-1,+1,0,0};
+				int dy[] = {0,0,-1,+1};
+				for(int d=0; d<4; ++d) {
+					int y2 = yy+dy[d];
+					int x2 = xx+dx[d];
+					if(0<=x2&&x2<W&&0<=y2&&y2<H) {
+						if(s[y2][x2]==ME&&color[y2][x2]==NOTYET) {
+							color[y2][x2] = newId;
+							Q.emplace(y2, x2);
+						}
+						if(s[y2][x2]!=ME&&color[y2][x2]!=NOTYET) {
+							tonari.insert(color[y2][x2]);
+						}
+					}
+				}
+			}
+			if(tonari.size() == 1)
+				tree[*tonari.begin()].push_back(newId);
+		}
+		return tree;
+	}
+
+	map<vector<int>, int> hashId;
+	bool tree_eq(const vector<vector<int>>& a, const vector<vector<int>>& b)
+	{
+		return hash(a,0) == hash(b,0);
+	}
+
+	int hash(const vector<vector<int>>& a, int r)
+	{
+		vector<int> ch;
+		for(int v: a[r])
+			ch.push_back(hash(a, v));
+		sort(ch.begin(), ch.end());
+		if(hashId.count(ch))
+			return hashId[ch];
+		int v = hashId.size();
+		return hashId[ch] = v;
+	}
+};
+
+// 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 string& Expected, const string& 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(_, Balance().canTransform(initial, target));}
+int main(){
+
+CASE(0)
+	string initial_[] = {"#"};
+	  vector <string> initial(initial_, initial_+sizeof(initial_)/sizeof(*initial_)); 
+	string target_[] = {"."};
+	  vector <string> target(target_, target_+sizeof(target_)/sizeof(*target_)); 
+	string _ = "Impossible"; 
+END
+CASE(1)
+	string initial_[] = {"..",
+ ".."};
+	  vector <string> initial(initial_, initial_+sizeof(initial_)/sizeof(*initial_)); 
+	string target_[] = {".#",
+ "##"};
+	  vector <string> target(target_, target_+sizeof(target_)/sizeof(*target_)); 
+	string _ = "Possible"; 
+END
+CASE(2)
+	string initial_[] = {"...",
+ ".#.",
+ "..."};
+	  vector <string> initial(initial_, initial_+sizeof(initial_)/sizeof(*initial_)); 
+	string target_[] = {"###",
+ "#.#",
+ "###"};
+	  vector <string> target(target_, target_+sizeof(target_)/sizeof(*target_)); 
+	string _ = "Impossible"; 
+END
+CASE(3)
+	string initial_[] = {".#.#.......",
+ "####.###...",
+ ".....####..",
+ "..##.#.##.#",
+ ".##..#.##.#",
+ ".#######...",
+ ".#....###.#",
+ ".##.#.#....",
+ "..#...#...#",
+ "..#####...#",
+ "..........."};
+	  vector <string> initial(initial_, initial_+sizeof(initial_)/sizeof(*initial_)); 
+	string target_[] = {"...........",
+ ".###....#..",
+ ".#.#..#....",
+ ".###.......",
+ ".#####.....",
+ ".#...#####.",
+ ".#.#.....#.",
+ ".#.#####.#.",
+ ".#.......#.",
+ ".#########.",
+ "..........."};
+	  vector <string> target(target_, target_+sizeof(target_)/sizeof(*target_)); 
+	string _ = "Impossible"; 
+END
+CASE(4)
+	string initial_[] = {".....",
+ ".###.",
+ ".....",
+ ".###.",
+ "....."};
+	  vector <string> initial(initial_, initial_+sizeof(initial_)/sizeof(*initial_)); 
+	string target_[] = {".....",
+ ".#.#.",
+ ".#.#.",
+ ".#.#.",
+ "....."};
+	  vector <string> target(target_, target_+sizeof(target_)/sizeof(*target_)); 
+	string _ = "Possible"; 
+END
+/*
+CASE(5)
+	string initial_[] = ;
+	  vector <string> initial(initial_, initial_+sizeof(initial_)/sizeof(*initial_)); 
+	string target_[] = ;
+	  vector <string> target(target_, target_+sizeof(target_)/sizeof(*target_)); 
+	string _ = ; 
+END
+CASE(6)
+	string initial_[] = ;
+	  vector <string> initial(initial_, initial_+sizeof(initial_)/sizeof(*initial_)); 
+	string target_[] = ;
+	  vector <string> target(target_, target_+sizeof(target_)/sizeof(*target_)); 
+	string _ = ; 
+END
+*/
+
+}
+// END CUT HERE