Accepted
/in/foo.cc: In function 'int main()': /in/foo.cc:43:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<v.size()&&v[i].first<=right;i++) ~^~~~~~~~~
/in/foo.cc: In function 'int main()': /in/foo.cc:43:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<v.size()&&v[i].first<=right;i++) ~^~~~~~~~~