/in/foo.cc: In function 'void rmq()':
/in/foo.cc:9:44: warning: suggest parentheses around '-' inside '<<' [-Wparentheses]
             f[i][j]=min(f[i][j-1],f[i+(1<<j-1)][j-1]);
                                           ~^~
/in/foo.cc: In function 'int main()':
/in/foo.cc:27:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         for(int j=0;j<v[i].size()-1;j++){
                     ~^~~~~~~~~~~~~~
/in/foo.cc:29:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
             for(int l=j+1;l<v[i].size();l++){
                           ~^~~~~~~~~~~~