Wrong Answer
/in/foo.cc: In function 'int main()':
/in/foo.cc:31:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for(j=0;j<m.size();j++){
^
/in/foo.cc: In function 'int main()':
/in/foo.cc:31:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for(j=0;j<m.size();j++){
^
