/in/foo.cc: In function 'int main()':
/in/foo.cc:9:18: warning: suggest parentheses around assignment used as truth value [-Wparentheses]
    9 |           if(s[i]='2') lei++;
/in/foo.cc:10:18: warning: suggest parentheses around assignment used as truth value [-Wparentheses]
   10 |           if(s[i]='3') cnt+=lei;