#include 

#include 

int main(void) 

{

	FILE *fp = fopen("number.txt", "w");

	if(fp==NULL){

		fprintf(stderr, "★ファイルを開けません");

		exit(EXIT_FAILURE);

	}

	

	int n;

	while(scanf("%d", &n)!=EOF){

		fprintf(fp, "%d\n", n);

	}

	return 0;

}