Run id: 123047

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:14:15: warning: array subscript has type 'char' [-Wchar-subscripts]
         b[a[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:19:18: warning: array subscript has type 'char' [-Wchar-subscripts]
         if(b[a[i]]=1){
                  ^
Main.cc:19:21: warning: suggest parentheses around assignment used as truth value [-Wparentheses]
         if(b[a[i]]=1){
                     ^
Main.cc:20:19: error: expected primary-expression before 'char'
             cout<