Compilare: user.cpp: In function ‘void dfs(int, int, int&)’: user.cpp:33:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<G[nod].size(); i++) ^ user.cpp: In function ‘int main()’: user.cpp:70:31: warning: format ‘%d’ expects argument of type ‘int*’, but argument 3 has type ‘short unsigned int*’ [-Wformat=] scanf("%d%d%d", &p, &N, &M); ^ user.cpp:70:31: warning: format ‘%d’ expects argument of type ‘int*’, but argument 4 has type ‘short unsigned int*’ [-Wformat=] user.cpp:67:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("dragoni.in", "rt", stdin); ^ user.cpp:68:41: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("dragoni.out", "wt", stdout); ^ user.cpp:70:32: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d", &p, &N, &M); ^ user.cpp:73:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &d); ^ user.cpp:78:40: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d", &a, &b, &d); ^