Submission #1455959
Source Code Expand
#include <stdio.h> #include <iostream> #include <vector> #include <algorithm> #define MOD 1000000007 typedef long long ll; using namespace std; int main(void){ ll n; ll d[100001]; ll a[100001],b[100001]; ll Asum[100001]; cin>>n; for(int i=0;i<n;i++)cin>>d[i]; sort(d,d+n); /*for(int i=0;i<n;i++){ cout<<d[i]<<endl; }*/ for(int i=0;i<n;i++){ //lower_bound(d,d+n,2*d[i])で2*d[i]を超える最小の添え字を返す //a[i]には2*d[i]を超える要素の個数 a[i]=n-(lower_bound(d,d+n,2*d[i])-d); Asum[i]=a[i]; //b[i]にはd[i]/2よりも小さな要素の個数 b[i]=upper_bound(d,d+n,d[i]/2)-d; } //累積和をとる for(int i=n-2;i>=0;i--){ Asum[i]+=Asum[i+1]; } ll ans=0; for(int i=1;i<n-1;i++){ int idx=lower_bound(d,d+n,2*d[i])-d; ans+=b[i]*Asum[idx]; ans%=MOD; } cout<<ans<<endl; }
Submission Info
Submission Time | |
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Task | B - 難易度 |
User | kyabaria |
Language | C++14 (GCC 5.4.1) |
Score | 50 |
Code Size | 994 Byte |
Status | WA |
Exec Time | 47 ms |
Memory | 2560 KB |
Judge Result
Set Name | Sample | Subtask1 | Subtask2 | ||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Score / Max Score | 0 / 0 | 50 / 50 | 0 / 50 | ||||||||
Status |
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Set Name | Test Cases |
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Sample | sample_01.txt, sample_02.txt, sample_03.txt |
Subtask1 | sample_01.txt, sample_02.txt, sample_03.txt, subtask1_01.txt, subtask1_02.txt, subtask1_03.txt, subtask1_04.txt, subtask1_05.txt, subtask1_06.txt, subtask1_07.txt, subtask1_08.txt, subtask1_09.txt, subtask1_10.txt, subtask1_11.txt, subtask1_12.txt, subtask1_13.txt, subtask1_14.txt, subtask1_15.txt, subtask1_16.txt, subtask1_17.txt, subtask1_18.txt, subtask1_19.txt |
Subtask2 | sample_01.txt, sample_02.txt, sample_03.txt, subtask1_01.txt, subtask1_02.txt, subtask1_03.txt, subtask1_04.txt, subtask1_05.txt, subtask1_06.txt, subtask1_07.txt, subtask1_08.txt, subtask1_09.txt, subtask1_10.txt, subtask1_11.txt, subtask1_12.txt, subtask1_13.txt, subtask1_14.txt, subtask1_15.txt, subtask1_16.txt, subtask1_17.txt, subtask1_18.txt, subtask1_19.txt, subtask2_01.txt, subtask2_02.txt, subtask2_03.txt, subtask2_04.txt, subtask2_05.txt, subtask2_06.txt, subtask2_07.txt, subtask2_08.txt, subtask2_09.txt, subtask2_10.txt, subtask2_11.txt, subtask2_12.txt, subtask2_13.txt, subtask2_14.txt, subtask2_15.txt, subtask2_16.txt, subtask2_17.txt, subtask2_18.txt, subtask2_19.txt, subtask2_20.txt, subtask2_21.txt |
Case Name | Status | Exec Time | Memory |
---|---|---|---|
sample_01.txt | AC | 1 ms | 256 KB |
sample_02.txt | AC | 2 ms | 2304 KB |
sample_03.txt | AC | 2 ms | 2304 KB |
subtask1_01.txt | AC | 1 ms | 256 KB |
subtask1_02.txt | AC | 1 ms | 256 KB |
subtask1_03.txt | AC | 2 ms | 384 KB |
subtask1_04.txt | AC | 2 ms | 256 KB |
subtask1_05.txt | AC | 2 ms | 256 KB |
subtask1_06.txt | AC | 2 ms | 384 KB |
subtask1_07.txt | AC | 2 ms | 256 KB |
subtask1_08.txt | AC | 2 ms | 256 KB |
subtask1_09.txt | AC | 2 ms | 256 KB |
subtask1_10.txt | AC | 2 ms | 2304 KB |
subtask1_11.txt | AC | 2 ms | 256 KB |
subtask1_12.txt | AC | 2 ms | 384 KB |
subtask1_13.txt | AC | 2 ms | 256 KB |
subtask1_14.txt | AC | 2 ms | 2304 KB |
subtask1_15.txt | AC | 2 ms | 384 KB |
subtask1_16.txt | AC | 3 ms | 2304 KB |
subtask1_17.txt | AC | 2 ms | 384 KB |
subtask1_18.txt | AC | 2 ms | 384 KB |
subtask1_19.txt | AC | 2 ms | 384 KB |
subtask2_01.txt | AC | 15 ms | 1024 KB |
subtask2_02.txt | AC | 13 ms | 896 KB |
subtask2_03.txt | AC | 6 ms | 512 KB |
subtask2_04.txt | AC | 8 ms | 640 KB |
subtask2_05.txt | AC | 37 ms | 2048 KB |
subtask2_06.txt | AC | 33 ms | 1920 KB |
subtask2_07.txt | AC | 3 ms | 2304 KB |
subtask2_08.txt | AC | 3 ms | 384 KB |
subtask2_09.txt | AC | 39 ms | 2176 KB |
subtask2_10.txt | AC | 24 ms | 1408 KB |
subtask2_11.txt | AC | 3 ms | 384 KB |
subtask2_12.txt | AC | 22 ms | 1408 KB |
subtask2_13.txt | AC | 4 ms | 384 KB |
subtask2_14.txt | AC | 29 ms | 1664 KB |
subtask2_15.txt | WA | 47 ms | 2560 KB |
subtask2_16.txt | WA | 47 ms | 2560 KB |
subtask2_17.txt | WA | 46 ms | 2560 KB |
subtask2_18.txt | WA | 47 ms | 2560 KB |
subtask2_19.txt | WA | 47 ms | 2560 KB |
subtask2_20.txt | WA | 27 ms | 2560 KB |
subtask2_21.txt | WA | 26 ms | 2560 KB |