what's wrong?

#include <bits/stdc++.h>
using namespace std;
int z[10],s[10],d[10],n,i,j,f,r,k;
int main(){
	cin>>n;
	for(i=0;i<=6;i++){
		cin>>z[i];
	}
	sort(z,z+7);
	for(j=1;j<=n;j++){
		for(i=0;i<=6;i++){
			cin>>s[i];
		}
		sort(s,s+7);
		f=0;r=0;k=0;
		while(f<7&&r<7){
			if(z[f]==s[r]){
				f++;r++;
				k++;
			}
			if(z[f]<s[r]){
				f++;
			}
			if(z[f]>s[r]){
				r++;
			}
		}
		d[k]++;
	}
	for(i=7;i>=1;i--){
		cout<<d[i]<<" ";
	} 
	return 0;
}