PAT B1012.数字分类

全部AC

#include <cstdio>
int valid[5] = {0};
int count[5] = {0};
int p1(int i) {
    printf("%d ", valid[i]);
}
void p() {
    printf("N ");
}
int main() {
    //如果使用数组存储就可以不用这么多的变量
	int time = 0, temp = 0;
	scanf("%d", &time);
	for(int i = 0; i < time; i++) {
		scanf("%d", &temp);
		if(temp % 5 == 0 && temp % 2 == 0) {
                valid[0] += temp;
                count[0]++;
		}
		if(temp % 5 == 1) {
			if(count[1] % 2 == 0) {
                valid[1] += temp;
			} else if(count[1] % 2 == 1) {
				valid[1] -= temp;
			}
			count[1]++;
		}
		if(temp % 5 == 2) {
			valid[2]++;
			count[2]++;
		}
		if(temp % 5 == 3) {
			valid[3] += temp;
			count[3]++;
		}
		if(temp % 5 == 4) {
			if(temp > valid[4]) {
				valid[4] = temp;
				count[4]++;
			}
		}
	}

	if(count[0] != 0) p1(0);
    else p();
	if(count[1] != 0) p1(1);
	else p();
	if(count[2] != 0) printf("%d ", count[2]);
	else p();
	if(count[3] != 0) printf("%.1f ", (double)valid[3] / count[3]);
	else p();
    if(count[4] != 0) p1(4);
    else printf("N");

	return 0;
}