/in/foo.cc: In function 'int main()':
/in/foo.cc:15:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int i=0;i < v.size();++i){
                   ^
/in/foo.cc:16:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
       for(int j=i+1;j < v.size();++j){
                       ^
/in/foo.cc:17:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         for(int q=j+1;q < v.size();++q){
                         ^
/in/foo.cc:7:19: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d",&n);
                   ^
/in/foo.cc:10:23: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d",&m);
                       ^