Compilare: main.cpp: In function 'int main()': main.cpp:62:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < pos[maxSupport].size(); ++i) ~~^~~~~~~~~~~~~~~~~~~~~~~~ main.cpp:48:37: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("secventa.in", "r", stdin); ^ main.cpp:49:39: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("secventa.out", "w", stdout); ^ main.cpp:51:18: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &n); ^ main.cpp:52:18: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &k); ^ main.cpp:56:20: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &x); ^