Compilare: main.cpp: In function 'void dfs(int, int)': main.cpp:10:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int poz = 0; poz < m[nod].size() ; poz ++) ~~~~^~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:22:36: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("asmax.in" , "r" , stdin); ^ main.cpp:23:38: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("asmax.out" , "w" , stdout); ^ main.cpp:25:19: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d" , &n); ^ main.cpp:27:25: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d" , &dp[i]); ^ main.cpp:31:28: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d" , &x , &y); ^