Compilare: user.cpp: In function ‘bool bfs()’: user.cpp:29:46: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int k = 0; k < g[q.front()].size(); ++ k) { ^ user.cpp: In function ‘int dfs(int, int)’: user.cpp:47:50: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int &k = rem[from]; k < g[from].size(); ++ k) { ^ user.cpp: In function ‘int dfsGrafRamas(int, int)’: user.cpp:81:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int k = 0; k < g[from].size(); ++ k) { ^ user.cpp:95:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^ user.cpp: In function ‘int main()’: user.cpp:111:38: warning: narrowing conversion of ‘g[y].std::vector<_Tp, _Alloc>::size<Muchie, std::allocator<Muchie> >()’ from ‘std::vector<Muchie>::size_type {aka unsigned int}’ to ‘int’ inside { } [-Wnarrowing] g[x].push_back({y, g[y].size(), 0, z}); ^ user.cpp:112:40: warning: narrowing conversion of ‘(g[x].std::vector<_Tp, _Alloc>::size<Muchie, std::allocator<Muchie> >() + 4294967295u)’ from ‘std::vector<Muchie>::size_type {aka unsigned int}’ to ‘int’ inside { } [-Wnarrowing] g[y].push_back({x, g[x].size() - 1, 0, z}); ^ user.cpp:137:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < sol.size(); ++ i) { ^ user.cpp:98:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("critice.in", "r", stdin); ^ user.cpp:99:40: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("critice.out", "w", stdout); ^ user.cpp:102:26: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &n, &m); ^ user.cpp:106:36: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d", &x, &y, &z); ^