Submission #1605217
Source Code Expand
#include <algorithm> #include <cstdio> #include <iostream> #include <map> #include <cmath> #include <queue> #include <set> #include <sstream> #include <stack> #include <string> #include <vector> #include <stdlib.h> #include <stdio.h> #include <bitset> #include <cstring> using namespace std; #define FOR(I,A,B) for(int I = (A); I < (B); ++I) #define CLR(mat) memset(mat, 0, sizeof(mat)) typedef long long ll; const int mod = 1000000007; // 部分点 // 答え見た int main() { ios::sync_with_stdio(false); cin.tie(0); int N; cin >> N; vector<int> D(N); FOR(i,0,N) cin >> D[i]; sort(D.begin(), D.end()); int A[N], B[N]; CLR(A); CLR(B); FOR(i,0,N) { A[i] = N - (lower_bound(D.begin(), D.end(), 2*D[i]) - D.begin()); B[i] = upper_bound(D.begin(), D.end(), D[i]/2) - D.begin(); } ll sumA[N+1]; CLR(sumA); FOR(i,0,N) sumA[i+1] += sumA[i] + A[i]; ll ans = 0; FOR(i,1,N-1) { ll sum = B[i]; sum = (sum * (sumA[N] - sumA[N-A[i]])) % mod; ans = (ans + sum) % mod; } cout << ans << endl; return 0; }
Submission Info
Submission Time | |
---|---|
Task | B - 難易度 |
User | nenuon |
Language | C++14 (GCC 5.4.1) |
Score | 100 |
Code Size | 1084 Byte |
Status | AC |
Exec Time | 25 ms |
Memory | 2176 KB |
Judge Result
Set Name | Sample | Subtask1 | Subtask2 | ||||||
---|---|---|---|---|---|---|---|---|---|
Score / Max Score | 0 / 0 | 50 / 50 | 50 / 50 | ||||||
Status |
|
|
|
Set Name | Test Cases |
---|---|
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 | 256 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 | 1 ms | 256 KB |
subtask1_08.txt | AC | 2 ms | 256 KB |
subtask1_09.txt | AC | 2 ms | 256 KB |
subtask1_10.txt | AC | 1 ms | 256 KB |
subtask1_11.txt | AC | 2 ms | 256 KB |
subtask1_12.txt | AC | 2 ms | 256 KB |
subtask1_13.txt | AC | 1 ms | 256 KB |
subtask1_14.txt | AC | 2 ms | 256 KB |
subtask1_15.txt | AC | 2 ms | 256 KB |
subtask1_16.txt | AC | 2 ms | 256 KB |
subtask1_17.txt | AC | 2 ms | 256 KB |
subtask1_18.txt | AC | 2 ms | 384 KB |
subtask1_19.txt | AC | 2 ms | 384 KB |
subtask2_01.txt | AC | 8 ms | 896 KB |
subtask2_02.txt | AC | 7 ms | 768 KB |
subtask2_03.txt | AC | 4 ms | 512 KB |
subtask2_04.txt | AC | 4 ms | 512 KB |
subtask2_05.txt | AC | 19 ms | 1792 KB |
subtask2_06.txt | AC | 17 ms | 1664 KB |
subtask2_07.txt | AC | 2 ms | 384 KB |
subtask2_08.txt | AC | 2 ms | 384 KB |
subtask2_09.txt | AC | 21 ms | 1920 KB |
subtask2_10.txt | AC | 13 ms | 1280 KB |
subtask2_11.txt | AC | 2 ms | 384 KB |
subtask2_12.txt | AC | 12 ms | 1152 KB |
subtask2_13.txt | AC | 3 ms | 384 KB |
subtask2_14.txt | AC | 15 ms | 1408 KB |
subtask2_15.txt | AC | 25 ms | 2176 KB |
subtask2_16.txt | AC | 24 ms | 2176 KB |
subtask2_17.txt | AC | 25 ms | 2176 KB |
subtask2_18.txt | AC | 25 ms | 2176 KB |
subtask2_19.txt | AC | 24 ms | 2176 KB |
subtask2_20.txt | AC | 15 ms | 2176 KB |
subtask2_21.txt | AC | 14 ms | 2176 KB |