求大佬看看为什么错

#include<iostream>
#include<cmath>
#include<algorithm>
#include<cstring>
using namespace std;
#define MAXN 50
int f[100];//内外
string name[100];//名字
int a[100] , b[100];//左右、移动格数
int main() {
	int n, m;
	string nmaeans;
	cin >> n >> m;
	int x = 1;
	string  ans;
	for (int j = 1; j <=n; j++)
	{
		cin >> f[j] >> name[j];
	}

	for (int i = 1; i <=m; i++)
	{
		cin >> a[i] >> b[i];
		if (a[i]) {//右
			if (f[x] == 0)//内
			{
				x = (x + b[i]) % n;
			}
			else {
				x = (x + n - b[i]) % n;
			}

		}
		if(!a[i])
		{//左
			if (f[x] == 0)
			{
				x = (x + n - b[i]) % n;
			}
			else {
				x = (x + b[i]) % n;
			}
		}
		if (x == 0) {
			x = n;
		}
	}
	ans = name[x];
	cout << ans;
	return 0;
}