为什么报错啊 No valid executable file was produced by the compiler ./ccstgQQ3.o: in function __static_initialization_and_destruction_0(int, int)': src:(.text+0x47e): relocation truncated to fit: R_X86_64_PC32 against .bss' src:(.text+0x497): relocation truncated to fit: R_X86_64_PC32 against `.bss' collect2: 错误：ld 返回 1

#include<bits/stdc++.h>
using namespace std;
queue<int>q,q1;
int dx[4]={1,-1,1,-1};
bool vis[50005][50005];
int main()
{
	int m,a[50005][5],b[50005],ans=-1;
	cin>>m;
	for(int i=1;i<=m;i++)
	{
	    cin>>a[i][1]>>a[i][2]>>b[i];
	    vis[a[i][1]][a[i][2]]=true;
	    vis[a[i][1]+1][a[i][2]]=true;
	    vis[a[i][1]-1][a[i][2]]=true;
	    vis[a[i][1]][a[i][2]+1]=true;
	    vis[a[i][1]][a[i][2]-1]=true;
	}
	q.push(0);
	q1.push(0);
	while(!q.empty())
	{
		for(int i=0;i<4;i++)
		{
			int tx=q.front(),ty=q1.front();
			if(i<=1) tx+=dx[i];
			if(i>1) ty+=dx[i];
			if(tx>0&&ty>0)
			{
				ans++;
				if(vis[tx][ty]==false) 
				{
				    cout<<ans;
				    return 0;
				}
				q.push(tx);
				q1.push(ty);
			}
		}
		q.pop();
		q1.pop();
	}
	cout<<ans;
	return 0;
}