Compilare: main.cpp: In function 'int bfs()': main.cpp:27:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int k = 0; k < g[from].size(); ++ k) { ~~^~~~~~~~~~~~~~~~ main.cpp: In function 'int dfs(int, int)': main.cpp:52:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int k = rem[from]; k < g[from].size(); ++ k) { ~~^~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:95:39: warning: narrowing conversion of 'g[dr].std::vector<_Tp, _Alloc>::size<Muchie, std::allocator<Muchie> >()' from 'std::vector<Muchie>::size_type {aka long unsigned int}' to 'int' inside { } [-Wnarrowing] g[i].push_back({dr, g[dr].size(), 0, in}); ~~~~~~~~~~^~ main.cpp:96:41: warning: narrowing conversion of '(g[i].std::vector<_Tp, _Alloc>::size<Muchie, std::allocator<Muchie> >() - 1ul)' from 'std::vector<Muchie>::size_type {aka long unsigned int}' to 'int' inside { } [-Wnarrowing] g[dr].push_back({i, g[i].size() - 1, 0, 0}); ~~~~~~~~~~~~^~~ main.cpp:98:47: warning: narrowing conversion of 'g[(i + 1)].std::vector<_Tp, _Alloc>::size<Muchie, std::allocator<Muchie> >()' from 'std::vector<Muchie>::size_type {aka long unsigned int}' to 'int' inside { } [-Wnarrowing] g[src].push_back({i + 1, g[i + 1].size(), 0, out}); ~~~~~~~~~~~~~^~ main.cpp:99:48: warning: narrowing conversion of '(g[src].std::vector<_Tp, _Alloc>::size<Muchie, std::allocator<Muchie> >() - 1ul)' from 'std::vector<Muchie>::size_type {aka long unsigned int}' to 'int' inside { } [-Wnarrowing] g[i + 1].push_back({src, g[src].size() - 1, 0, 0}); ~~~~~~~~~~~~~~^~~ main.cpp:103:49: warning: narrowing conversion of 'g[j].std::vector<_Tp, _Alloc>::size<Muchie, std::allocator<Muchie> >()' from 'std::vector<Muchie>::size_type {aka long unsigned int}' to 'int' inside { } [-Wnarrowing] g[i + 1].push_back({j, g[j].size(), 0, 1}); ~~~~~~~~~^~ main.cpp:104:56: warning: narrowing conversion of '(g[(i + 1)].std::vector<_Tp, _Alloc>::size<Muchie, std::allocator<Muchie> >() - 1ul)' from 'std::vector<Muchie>::size_type {aka long unsigned int}' to 'int' inside { } [-Wnarrowing] g[j].push_back({i + 1, g[i + 1].size() - 1, 0, 0}); ~~~~~~~~~~~~~~~~^~~ main.cpp:112:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 0; j < g[i].size(); ++ j) { ~~^~~~~~~~~~~~~ main.cpp:83:36: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("harta.in", "r", stdin); ^ main.cpp:84:38: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("harta.out", "w", stdout); ^ main.cpp:86:20: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &n); ^ main.cpp:93:33: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &out, &in); ^