Compilare: main.cpp: In function 'int bfs(int)': main.cpp:39:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i = 0; i < ad[u].size(); i++) { ~~^~~~~~~~~~~~~~ main.cpp: In function 'void citire(int&, int&)': main.cpp:16:27: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d", &n, &m); ^ main.cpp:18:39: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d %d", &x, &y, &cp); ^ main.cpp: In function 'int main()': main.cpp:57:39: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("maxflow.in", "r", stdin); ^ main.cpp:58:40: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("maxflow.out", "w", stdout); ^