foo.cc: In function 'void write(int)':
foo.cc:12:5: warning: this 'if' clause does not guard... [-Wmisleading-indentation]
   12 |     if (x > 9) write(x/10); putchar(x%10+'0');
      |     ^~
foo.cc:12:29: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'if'
   12 |     if (x > 9) write(x/10); putchar(x%10+'0');
      |                             ^~~~~~~
foo.cc: In function 'int main()':
foo.cc:58:21: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   58 |             mid = l + r >> 1;
      |                   ~~^~~
foo.cc:48:11: warning: unused variable 'j' [-Wunused-variable]
   48 |     int i,j,x,y,tot,p;
      |           ^

[Hydro](https://hydro.ac)提供评测服务