题目 大佬帮忙看一下

#include<bits/stdc++.h>
using namespace std;
int a[17]={0,0,70,140,210,280,350,601,671,741,811,881,951,1202,1272,1342,1412};
int main(){
	int t;
	cin>>t;
	while(t--){
		char s[5];
		for(int i=0;i<=4;i++)cin>>s[i];
		int x=(s[0]-'0')*600+(s[1]-'0')*60+(s[3]-'0')*10+s[4]-'0';
		int p,ans=0;
		cin>>p;
		x=x%p;
		for(int i=1;i<=16;i++){
			if(a[i]>=x&&(a[i]-x)%p==0)ans++;
		}
		cout<<ans<<"\n";
	}
	return 0;
}