Compilare: main.cpp: In function 'int main()': main.cpp:24:24: warning: format '%d' expects argument of type 'int*', but argument 3 has type 'long long int*' [-Wformat=] scanf("%d %d", &n, &e); ^ main.cpp:53:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < m.size(); i++) ~~^~~~~~~~~~ main.cpp:21:36: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("galeti2.in", "r", stdin); ^ main.cpp:22:38: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("galeti2.out", "w", stdout); ^ main.cpp:24:25: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d", &n, &e); ^