求助!!!

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;
}