Compilare: main.cpp: In function 'int main()': main.cpp:96:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (ind[pos] < c[pos].size()) ~~~~~~~~~^~~~~~~~~~~~~~~ main.cpp:61:34: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("ramen.in", "r", stdin); ^ main.cpp:62:36: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("ramen.out", "w", stdout); ^ main.cpp:65:24: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &n, &d); ^ main.cpp:67:36: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &v[i].t, &v[i].p); ^