Submission #2242924
Source Code Expand
#include <bits/stdc++.h> using namespace std; typedef long long ll; typedef unsigned long long ull; #define rep(i,a) for(int i=0;i<(a);i++) #define MOD 1000000007 const int NMAX=100000; ll A[NMAX],B[NMAX],D[NMAX],sumA[NMAX+1]; int main(){ int N; cin>>N; rep(i,N) cin>>D[i]; sort(D,D+N); rep(i,N){ A[i]=N-(lower_bound(D,D+N,D[i]*2)-D); int x=lower_bound(D,D+N,D[i]/2+1)-D; while(D[x]*2>D[i]) x--; x=max(0,x); B[i]=x+(D[0]*2<=D[i]?1:0); } rep(i,N) sumA[N-1-i]=sumA[N-i]+A[N-1-i]; ll ans=0; rep(i,N){ int ind=lower_bound(D,D+N,D[i]*2)-D; (ans+=sumA[ind]*B[i])%=MOD; } cout<<ans<<endl; return 0; }
Submission Info
Submission Time | |
---|---|
Task | B - 難易度 |
User | misosoup |
Language | C++14 (GCC 5.4.1) |
Score | 100 |
Code Size | 676 Byte |
Status | AC |
Exec Time | 48 ms |
Memory | 3328 KB |
Judge Result
Set Name | Sample | Subtask1 | Subtask2 | ||||||
---|---|---|---|---|---|---|---|---|---|
Score / Max Score | 0 / 0 | 50 / 50 | 50 / 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 | 1 ms | 256 KB |
sample_03.txt | AC | 1 ms | 256 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 | 384 KB |
subtask1_09.txt | AC | 2 ms | 384 KB |
subtask1_10.txt | AC | 2 ms | 256 KB |
subtask1_11.txt | AC | 2 ms | 384 KB |
subtask1_12.txt | AC | 2 ms | 384 KB |
subtask1_13.txt | AC | 2 ms | 256 KB |
subtask1_14.txt | AC | 2 ms | 256 KB |
subtask1_15.txt | AC | 2 ms | 384 KB |
subtask1_16.txt | AC | 2 ms | 384 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 | 1152 KB |
subtask2_02.txt | AC | 13 ms | 1024 KB |
subtask2_03.txt | AC | 6 ms | 640 KB |
subtask2_04.txt | AC | 7 ms | 640 KB |
subtask2_05.txt | AC | 38 ms | 2688 KB |
subtask2_06.txt | AC | 33 ms | 2432 KB |
subtask2_07.txt | AC | 3 ms | 384 KB |
subtask2_08.txt | AC | 3 ms | 384 KB |
subtask2_09.txt | AC | 40 ms | 2816 KB |
subtask2_10.txt | AC | 24 ms | 1792 KB |
subtask2_11.txt | AC | 3 ms | 384 KB |
subtask2_12.txt | AC | 22 ms | 1664 KB |
subtask2_13.txt | AC | 4 ms | 512 KB |
subtask2_14.txt | AC | 29 ms | 2176 KB |
subtask2_15.txt | AC | 48 ms | 3328 KB |
subtask2_16.txt | AC | 48 ms | 3328 KB |
subtask2_17.txt | AC | 47 ms | 3328 KB |
subtask2_18.txt | AC | 47 ms | 3328 KB |
subtask2_19.txt | AC | 47 ms | 3328 KB |
subtask2_20.txt | AC | 27 ms | 3328 KB |
subtask2_21.txt | AC | 26 ms | 3328 KB |