红辣椒炒青辣椒一（wu）百（shi）分，为啥？

#include<bits/stdc++.h>
using namespace std;
int main(){
    int n,na,nb,ma=0,mb=0;
	int a[401],b[401];
    cin>>n>>na>>nb;
    for(int i=1;i<=na;i++){
    	cin>>a[i];
    	if(na<n)
    	a[na+i]=a[i];
	}
    for(int i=1;i<=nb;i++){
    	cin>>b[i];
    	if(nb<n)
    	b[nb+i]=b[i];
	}	
    for(int i=1;i<=n;i++){
		if(a[i]==0&&(b[i]==2||b[i]==3))
			ma++;
		if(a[i]==0&&(b[i]==1||b[i]==4))
			mb++;
		if(a[i]==1&&(b[i]==0||b[i]==3))
			ma++;
		if(a[i]==1&&(b[i]==2||b[i]==4))
			mb++;
		if(a[i]==2&&(b[i]==1||b[i]==4))
			ma++;
		if(a[i]==2&&(b[i]==0||b[i]==3))
			mb++;
		if(a[i]==3&&(b[i]==2||b[i]==4))
			ma++;
		if(a[i]==3&&(b[i]==0||b[i]==1))
			mb++;
		if(a[i]==4&&(b[i]==0||b[i]==1))
			ma++;
		if(a[i]==4&&(b[i]==2||b[i]==3))
			mb++;
	}
	cout<<ma<<" "<<mb;
	return 0;
}