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class BuildingRoutes {
public:
	int build(vector <string> d, int T) {
		int dist[50][50], n = d.size();
		for (int i = 0; i < n; ++i) for (int j = 0; j < n; ++j)
			dist[i][j] = d[i][j] - '0';
		int sp[50][50];
		for (int i = 0; i < n; ++i) for (int j = 0; j < n; ++j)
			sp[i][j] = dist[i][j];
		for (int k = 0; k < n; ++k)
			for (int i = 0; i < n; ++i)
				for (int j = 0; j < n; ++j)
					if (sp[i][k] + sp[k][j] < sp[i][j])
						sp[i][j] = sp[i][k] + sp[k][j];
 
		int Count[50][50] = {{0}};
		for (int i = 0; i < n; ++i) {
			for (int j = 0; j < n; ++j) {
				if (i == j) continue;
				for (int k = 0; k < n; ++k)
					for (int l = 0; l < n; ++l) {
						if (k == l) continue;
						if (sp[i][k] + dist[k][l] + sp[l][j] == sp[i][j])
							++Count[k][l];
					}
			}
		}
		int res = 0;
		for (int i = 0; i < n; ++i)
			for (int j = 0; j < n; ++j)
				if (i != j && Count[i][j] >= T)
					res += dist[i][j];
		return res;
	}
};

prog.cpp:3:12: error: ‘vector’ has not been declared
  int build(vector <string> d, int T) {
            ^
prog.cpp:3:19: error: expected ‘,’ or ‘...’ before ‘<’ token
  int build(vector <string> d, int T) {
                   ^
prog.cpp: In member function ‘int BuildingRoutes::build(int)’:
prog.cpp:4:25: error: ‘d’ was not declared in this scope
   int dist[50][50], n = d.size();
                         ^
prog.cpp:31:34: error: ‘T’ was not declared in this scope
     if (i != j && Count[i][j] >= T)
                                  ^

Standard output is empty