Compilare: main.cpp: In function 'int main()': main.cpp:134:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int y = 0; y < muchii[aux[j]].size(); ++y) ~~^~~~~~~~~~~~~~~~~~~~~~~ main.cpp: In function 'void CTC()': main.cpp:40:24: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &x, &y); ^ main.cpp: In function 'int main()': main.cpp:118:33: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("graf2.in", "r", stdin); ^ main.cpp:119:35: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("graf2.out", "w", stdout); ^ main.cpp:120:23: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &n, &m); ^