Compilare: user.cpp: In function ‘int bfs()’: user.cpp:27:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int k = 0; k < g[from].size(); ++ k) { ^ user.cpp: In function ‘int dfs(int, int)’: user.cpp:52:35: 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 main()’: user.cpp:94:39: 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}); ^ user.cpp:95:41: warning: narrowing conversion of ‘(g[i].std::vector<_Tp, _Alloc>::size<Muchie, std::allocator<Muchie> >() + 18446744073709551615ul)’ 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}); ^ user.cpp:97:47: 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}); ^ user.cpp:98:48: warning: narrowing conversion of ‘(g[src].std::vector<_Tp, _Alloc>::size<Muchie, std::allocator<Muchie> >() + 18446744073709551615ul)’ 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}); ^ user.cpp:102:49: 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}); ^ user.cpp:103:56: warning: narrowing conversion of ‘(g[(i + 1)].std::vector<_Tp, _Alloc>::size<Muchie, std::allocator<Muchie> >() + 18446744073709551615ul)’ 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}); ^ user.cpp:111:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 0; j < g[i].size(); ++ j) { ^ user.cpp:82:36: 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); ^ user.cpp:83:38: 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); ^ user.cpp:85:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &n); ^ user.cpp:92:33: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &out, &in); ^