#include <stdio.h>
#include <stdlib.h>

int main(int argc, char **argv) {

  char c;
  int count = 0;
  int firstSide = 0;
  while ((c=getchar()) != '\n') {
    if (c == '(') {
      firstSide = count;
      count = 0;
    }
    if (c == '|') {
      count++;
    }
  }
  if (count == firstSide) {
    printf("correct\n");
  } else {
    printf("fix\n");
  }
  return 0;
}