#include <stdio.h>

int main() {
    int score;
   while (1){
       printf("점수를 입력하세요.");
       scanf("%d", &score);
       if (score < 0 || score > 100) break;
       if (score >= 80){
           printf("축하합니다. 합격입니다."); 
       }
       
   } 
    printf("%d", sum);
    return 0;
}

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