实在找不出问题 A4输出都是错的 但是感觉没问题

[冷眼观world]

#include <iostream>
#include <iomanip>
using namespace std;
int main() {
int N=0,j=0,cnt=0,num=0,k=1;
int rec[1000] = {0};
int A[5] = {0};

cin>> N;
for(int i=0; i<N; i++) {
cin>> rec[i];
if(rec[i]%10==0) {
A[0] += rec[i];
}
if(rec[i]%5==1) {
A[1] += k*rec[i];
k *= (-1);
}
if(rec[i]%5==2) {
num++;
}
if(rec[i]%5==3) {
A[3] = rec[i];
++cnt;
}
if(rec[i]%5==4) {
A[4] = A[4]>rec[i]?A[4]:rec[i];
}
}
A[2] = num;
if(A[0] != 0) {
cout << A[0] << " ";
}
else {
cout << "N" << " ";
}
if(A[1] != 0) {
cout << A[1] << " ";
}
else {
cout << "N" << " ";
}
if(A[2] != 0) {
cout << A[2] << " ";
}
else {
cout << "N" << " ";
}
if(A[3] != 0) {
cout << fixed << setprecision(1) << A[3]/(float)cnt << " ";
}
else {
cout << "N" << " ";
}
if(A[4] != 0) {
cout << A[4];
}
else {
cout << "N";
}
return 0;
}

[冷眼观world]

找到问题了