Compilare: main.cpp: In function 'long long int solve(long long int, long long int)': main.cpp:26:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(long long j=0;j<d1.size();j++)d[j]=d1[j]; ~^~~~~~~~~~ main.cpp:30:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(long long j=0;j<d.size();j++) ~^~~~~~~~~ main.cpp:45:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(long long j=0;j<d.size();j++)d[j]*=d1[j]; ~^~~~~~~~~ main.cpp: In function 'int main()': main.cpp:52:38: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("overpower.in","r",stdin); ^ main.cpp:53:40: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("overpower.out","w",stdout); ^