/in/foo.cc: In function 'int main()':
/in/foo.cc:24:5: warning: this 'else' clause does not guard... [-Wmisleading-indentation]
     else grade[int((nums[i])[j] - '0') - 1]++;break;
     ^~~~
/in/foo.cc:24:47: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'else'
     else grade[int((nums[i])[j] - '0') - 1]++;break;
                                               ^~~~~