Compilare: main.cpp: In function 'int main()': main.cpp:53:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(ll i=0;i<primes.size();i++) ~^~~~~~~~~~~~~~ main.cpp:60:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(ll l=0;l<num[j].size();l++) ~^~~~~~~~~~~~~~ main.cpp:67:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(ll i1=0;i1<v.size();i1++) ~~^~~~~~~~~ main.cpp:71:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(i2+1<v.size()&&v[i2+1]-v[i1]-i2+i1-2<=0) ~~~~^~~~~~~~~ main.cpp:79:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(ll i1=0;i1<v.size();i1++) ~~^~~~~~~~~ main.cpp:83:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(i2+1<v.size()&&v[i2+1]-v[i1]-i2+i1-1<=0) ~~~~^~~~~~~~~ main.cpp:38:38: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("deletegcd.in","r",stdin); ^ main.cpp:39:40: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("deletegcd.out","w",stdout); ^