Submission #993101

#	Time	Username	Problem	Language	Result	Execution time	Memory
993101		Mardonbekhazratov	Intergalactic ship (IZhO19_xorsum)	C++17	17 / 100	2082 ms	1624 KiB

xorsum

#include<bits/stdc++.h>
using namespace std;

const int MOD=1e9+7;

signed main(){
    int n;
    cin>>n;
    vector<int>a(n);
    for(int i=0;i<n;i++) cin>>a[i];
    int q;
    cin>>q;
    vector<array<int,3>>queries(q);
    long long ans=0;
    for(int i=0;i<q;i++){
        cin>>queries[i][0]>>queries[i][1]>>queries[i][2];
    }
    for(int mask=0;mask<(1<<q);mask++){
        vector<int>b=a;
        for(int i=0;i<q;i++){
            if(mask>>i & 1){
                for(int j=queries[i][0]-1;j<queries[i][1];j++) b[j]^=queries[i][2];
            }
        }
        for(int i=0;i<n;i++){
            long long s=0;
            for(int j=i;j<n;j++){
                s+=b[j];
                ans+=s*s;
                ans%=MOD;
            }
        }
    }
    cout<<ans;
}

• Subtask 1: 4 / 4
• Subtask 2: 5 / 5
• Subtask 3: 0 / 6
• Subtask 4: 0 / 9
• Subtask 5: 8 / 8
• Subtask 6: 0 / 11
• Subtask 7: 0 / 19
• Subtask 8: 0 / 30
• Subtask 9: 0 / 8