Compilare: user.cpp: In function ‘int cauta(int, int, int)’: user.cpp:20:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(;k<=v[i].size();k<<=1); ^ user.cpp:22:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(ans+k<v[i].size()&&v[i][ans+k]<x) ^ user.cpp: In function ‘int main()’: user.cpp:50:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0;j<v[a].size();j++) ^ user.cpp:52:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(k=1;k<v[b].size();k<<=1); ^ user.cpp:56:40: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(ans+k<v[b].size()&&v[b][ans+k]<v[a][j]) ^ user.cpp:60:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(ans+1<v[b].size()&&Min>abs(v[a][j]-v[b][ans+1])) ^ user.cpp:74:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(k=1;k<v[j].size();k<<=1); ^ user.cpp:80:40: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(ans+k<v[j].size()&&B<=caut) ^