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IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#136800#241. Chiaki Sequence Revisitedwtn135687#0 196ms3588kbC++20983b2023-08-09 11:47:492023-08-09 11:47:50

Judging History

你现在查看的是最新测评结果

  • [2023-08-10 23:21:45]
  • System Update: QOJ starts to keep a history of the judgings of all the submissions.
  • [2023-08-09 11:47:50]
  • 评测
  • 测评结果:0
  • 用时:196ms
  • 内存:3588kb
  • [2023-08-09 11:47:49]
  • 提交

answer

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

const int N = 1e6+10,mo = 1e9+7;

int a[N];
int h(int x){
    return (x*(x+1)/2)%mo;
}
int f(int x){
    int k=x-1;
    int res=0;
    while(k>0){
        res+=k;k/=2;
    }
    return res+1;
}
int g(int x){
    int k=x-1,k2=1;
    int res=0;
    while(k>0){
        res+=h(k)*k2%mo;
        res%=mo;
        k/=2;
        k2=k2*2%mo;
    }
    return (res+1)%mo;
}


inline void solve(){
    int n;cin>>n;
    int l=2,r=1e18;
    while(l<r){
        int mid=l+r+1>>1;
        if(f(mid)<n)l=mid;
        else r=mid-1;
    }
    int x=l;
    if(f(x)>=n)x=1;
    int ans=(g(x)+(n-f(x))*x%mo)%mo;
    cout<<ans<<"\n";
    

}



signed main(){
    ios::sync_with_stdio(false),cin.tie(0),cout.tie(0);
    int WTN666=1;cin>>WTN666;
    while(WTN666--){
        solve();
    }
}




































Details

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Test #1:

score: 0
Wrong Answer
time: 196ms
memory: 3588kb

input:

100000
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1...

output:

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945
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1041
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1105
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1241
1277
1313
1349
1386
1424
1462
1501
1541
158...

result:

wrong answer 10001st lines differ - expected: '550345233', found: '974330504'