Compilare: user.cpp: In function ‘void parsare(char*)’: user.cpp:41:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0 ; i < v.size(); ++i) ^ user.cpp: In function ‘void solve()’: user.cpp:81:5: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if(pairL[i] == 0) ^ user.cpp: In function ‘void read()’: user.cpp:47:23: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &n, &m); ^ user.cpp: In function ‘int main()’: user.cpp:98:33: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("senat.in", "r", stdin); ^ user.cpp:99:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("senat.out", "w", stdout); ^