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ID题目提交者结果用时内存语言文件大小提交时间测评时间
#712124#8520. Xor Partitionsucup-team4992#RE 1ms5724kbC++201.3kb2024-11-05 14:38:032024-11-05 14:38:04

Judging History

你现在查看的是最新测评结果

  • [2024-11-05 14:38:04]
  • 评测
  • 测评结果:RE
  • 用时:1ms
  • 内存:5724kb
  • [2024-11-05 14:38:03]
  • 提交

answer

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

const int N=5e5+5,mod=1e9+7,M=60;

int num[65],pos,n;
ll A[N];
ll sum[65][2];
ll dp[N],fpow[65];

void init(){
    fpow[0]=1;
    for(int i=1; i<=M; i++) fpow[i]=fpow[i-1]<<1,fpow[i]%=mod;
}

void calc(int x){
    pos=0;
    while(x){
        num[pos++]=x&1;
        x>>=1;
    }
    for(; pos<=M; pos++) num[pos]=0;
}

void solve(){
    cin>>n;
    for(int i=0; i<=60; i++) sum[i][1]=1;
    for(int i=1; i<=n; i++){
        ll x;
        cin>>x;
        calc(x);
        for(int j=0; j<=M; j++){
            dp[i]+=sum[j][num[j]]*fpow[j]%mod; dp[i]%=mod;
            // cout<<"num["<<j<<"] = "<<num[j]<<" , sum["<<j<<"] = "<<sum[j][0]<<" , "<<sum[j][1]<<"\n";
        }
        // cout<<"dp["<<i<<"] = "<<dp[i]<<"\n";
        for(int j=0; j<=M; j++){
            if(num[j]) swap(sum[j][0],sum[j][1]);
            sum[j][1]+=dp[i]; sum[j][1]%=mod;
            // cout<<"num["<<j<<"] = "<<num[j]<<" , sum["<<j<<"] = "<<sum[j][0]<<" , "<<sum[j][1]<<"\n";
        }
        // cout<<"\n";
    }
    cout<<dp[n]<<"\n";    
}

int main(){
    ios::sync_with_stdio(false);
    cin.tie(0); cout.tie(0);
    init();
    int T=1;
    // cin>>T;
    while(T--) solve();
    return 0;
}

詳細信息

Test #1:

score: 100
Accepted
time: 1ms
memory: 5724kb

input:

4
7 3 1 2

output:

170

result:

ok 1 number(s): "170"

Test #2:

score: 0
Accepted
time: 1ms
memory: 5724kb

input:

1
0

output:

0

result:

ok 1 number(s): "0"

Test #3:

score: 0
Accepted
time: 1ms
memory: 5636kb

input:

1
1

output:

1

result:

ok 1 number(s): "1"

Test #4:

score: 0
Accepted
time: 1ms
memory: 5692kb

input:

3
1 2 3

output:

16

result:

ok 1 number(s): "16"

Test #5:

score: 0
Accepted
time: 1ms
memory: 5636kb

input:

4
0 1 0 1

output:

2

result:

ok 1 number(s): "2"

Test #6:

score: -100
Runtime Error

input:

562
918479109239293921 960173570446350728 374394588863436385 418106819278123099 473761712658352147 662782574081105364 824954323015093862 827581845536521847 184394794881199801 820907621998888642 606529830885621237 961790689782125501 582742201855597942 337901250755571075 287706594894797714 18578215893...

output:


result: