自己运行连输入都不行

#include<bits/stdc++.h>
using namespace std;
struct st {
	int index;
	string name;
	int left_right;//0内1+0-	1外 1-0+
};
int main() {
	int n,m;
	cin>>n>>m;
	st a[n+1];
	for(int i=1; i<=n; i++) {
		cin>>a[i].left_right>>a[i].name;
		a[i].index=i;
	}
	int p=1,left_right1,r;
	for(int i=1; i<=m; i++) {
		cin>>left_right1>>r;
		if(a[p].left_right==0) {
			if(left_right1==1) {
				p+=r;
				while(p<=n) {
					p-=n;
	//				cout<<"a1 "<<p<<endl;
				}
				continue;
			} else {
				p-=r;
				while(p>0) {
					p+=n;
	//				cout<<"a2 "<<p<<endl;
				}
				continue;
			}
		} else {
			if(left_right1==0) {
				p+=r;
				while(p<=n) {
					p-=n;
	//				cout<<"b1 "<<p<<endl;
				}
				continue;
			} else {
				p-=r;
				while(p>1) {
					p+=n;
	//				cout<<"b2 "<<p<<endl;
				}
				continue;
			}
		}
		cout<<endl<<p<<endl;
	}
	cout<<a[p].name;
	return 0;
}

求助~~~~~~~~