#include <stdio.h>
 
int Leap(int year) {
    if (year % 400 == 0) return 1;       // 400で割り切れる → 閏年
    else if (year % 100 == 0) return 0;  // 100で割り切れる → 平年
    else if (year % 4 == 0) return 1;    // 4で割り切れる → 閏年
    else return 0;                       // その他 → 平年
}
 
int main() {
    int year;
 
    printf("西暦年を入力してください: ");
    scanf("%d", &year);
 
    if (Leap(year))
        printf("%d年は閏年です。\n", year);
    else
        printf("%d年は平年です。\n", year);
 
    return 0;
}

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