P1563 玩具谜题。。想问问为什么第四个点没过……

#include <iostream>
#include <cstdio>
#include <string>
#include <cstring>
#define I using
#define AK namespace
#define IOI std
I AK IOI;//增强信心大法好 
struct People
{
	string name;
	bool face;
};
struct Ques
{
	bool op;
	int stp;
};
People a[100005];
Ques b[100005];
int main()
{
	int n,m;
	cin>>n>>m;
	for(int i=1;i<=n;i++)
		cin>>a[i].face>>a[i].name;
	int cur=1;
	for(int i=1;i<=m;i++)
	{
		cin>>b[i].op>>b[i].stp;
		if(b[i].op==0)
		{
			if(a[cur].face==0) cur=(cur+n-b[i].stp)%n;
			else cur=(cur+b[i].stp)%n;
		}
		else
		{
			if(a[cur].face==0) cur=(cur+b[i].stp)%n;
			else cur=(cur+n-b[i].stp)%n;
		}
	}
	if(cur==0) cur=n;
	cout<<a[cur].name;
	return 0;
}