#include <iostream>
#include <cstdio>
#define int long long
#define p 1145141
using namespace std;
signed main(){
    int n,q,a,l,r,ans=0;
    cin>>n>>q;
    int sum[n+1]={};
    sum[0]=1; 
    for(int i=1;i<=n;i++){
        cin>>a;
        sum[i]=(int)(sum[i-1]*a);
    }
    for(int i=0;i<q;i++){
        cin>>l>>r;
        ans=(int)((ans^(sum[r]/sum[l-1])%p)%p);
    }
    cout<<ans;
    return 0;
}

这份代码，全RE，说什么 Floating-point exception.

this.