Wrong Answer
/in/foo.cc: In function 'void dp(int)': /in/foo.cc:10:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<a[x].size();i++) ~^~~~~~~~~~~~
/in/foo.cc: In function 'void dp(int)': /in/foo.cc:10:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<a[x].size();i++) ~^~~~~~~~~~~~