运行 ID: 320338

Main.cc: In function ‘int main()’:
Main.cc:27:10: error: ‘s’ was not declared in this scope
          s++;
          ^
Main.cc:30:4: error: ‘s2’ was not declared in this scope
    s2++;
    ^~
Main.cc:33:5: error: ‘s’ was not declared in this scope
  if(s==n || s2==n){
     ^
Main.cc:33:13: error: ‘s2’ was not declared in this scope
  if(s==n || s2==n){
             ^~