Run id: 123050

Main.cc: In function 'int main()':
Main.cc:13:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int i=0;i<=a.size();i++){
                  ^
Main.cc:18:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int i=0;i<=a.size();i++){
                  ^
Main.cc:20:19: error: expected primary-expression before 'char'
             cout<