Compilare: main.cpp: In function 'int main()': main.cpp:70:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i = 0;i < dv.size(); i++){ ~~^~~~~~~~~~~ main.cpp:62:35: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("nrecou.in","r",stdin); ^ main.cpp:63:37: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("nrecou.out","w",stdout); ^ main.cpp:66:20: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &n); ^