#include <stdio.h>
//関数のプロトタイプ宣言
//ここ↓を埋めてね1
int max(int x, int y);
//main関数
int main(void) {
int a,b,c,d;
//ここ↓を埋めてね2
(a<b)?b:a;
(c<d)?d:c;
return 0;
}
//max関数の定義
int max(int x, int y){
//ここ↓を埋めてね3
}
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