answer.code: In function ‘int main()’:
answer.code:218:2: error: expected ‘}’ at end of input
  218 | }
      |  ^
answer.code:131:24: note: to match this ‘{’
  131 |     FOR(i, 1, n + m, 1){
      |                        ^
answer.code:218:2: error: expected ‘}’ at end of input
  218 | }
      |  ^
answer.code:83:14: note: to match this ‘{’
   83 | signed main(){
      |              ^