#include <stdio.h>
int main(void) {
int a,i;
//1の時は素数ではないことを示す
if(a==1){
}
else{
for(i=2;i<a;i++){ //a未満の数で割れるものがあれば素数ではない
if(a%i==0){
break;
}
break;
}
}
return 0;
}
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