1012 数字分类

题目 

#include<stdio.h>
#define MAXN 10000
main() {
	double A4=0;
	int N;
	int A1=-1,A2=0,A3=0,A5=0;
	int cnt=0,Num,pnt=0,qnt=0;
	scanf("%d",&N);
	while(N) {
		scanf("%d",&Num);
		if(Num%10==0) {
			if(qnt==0)A1=0;
			A1+=Num;
			qnt++;
		}
		if(Num%5==1) {
			if(cnt%2==0)A2+=Num;
			else A2-=Num;
			cnt++;
		}
		if(Num%5==2)A3++;
		if(Num%5==3) {
			pnt++;
			A4=A4+Num;
		}
		if(Num%5==4) {
			if(Num>A5)A5=Num;
		}
		N--;
	}
	if(A1==-1)printf("N ");
	else printf("%d ",A1);
	if(cnt==0)printf("N ");
	else printf("%d ",A2);
	if(A3)printf("%d ",A3);
	else printf("N ");
	if(pnt)printf("%.1lf ",A4/pnt);
	else printf("N ");
	if(A5)printf("%d",A5);
	else printf("N");
}