Submission #7998158
Source Code Expand
#include <bits/stdc++.h> #define rep(i, n) for (int i = 0; i < (int)(n); i++) #define all(a) (a).begin(), (a).end() #define pb push_back #define ppb pop_back #define INF 1e18 typedef long long ll; using namespace std; int main(int argc, char *argv[]) { ios::sync_with_stdio(false); cin.tie(0); ll N; cin >> N; vector<ll> a(N); rep(i, N) cin >> a[i]; sort(all(a)); vector<ll> b; int x; if(N%2==0) x = 1; else x = 0; if(N%2 != 0)b.pb(0); for(int i = 1;2*i-x<N;i++) { b.pb(2*i-x); b.pb(2*i-x); } rep(i,N) { if(a[i] != b[i]) { cout<<0<<endl; return 0; } } cout << pow(2, N / 2)/(pow(10,9)+7) << endl; return 0; }
Submission Info
Submission Time | |
---|---|
Task | C - Lining Up |
User | alter0sss |
Language | C++14 (GCC 5.4.1) |
Score | 0 |
Code Size | 805 Byte |
Status | WA |
Exec Time | 16 ms |
Memory | 2168 KB |
Judge Result
Set Name | Sample | All | ||||||||
---|---|---|---|---|---|---|---|---|---|---|
Score / Max Score | 0 / 0 | 0 / 300 | ||||||||
Status |
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Set Name | Test Cases |
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Sample | sample_01.txt, sample_02.txt, sample_03.txt |
All | sample_01.txt, sample_02.txt, sample_03.txt, subtask_1_invalid_01.txt, subtask_1_invalid_02.txt, subtask_1_max_01.txt, subtask_1_max_02.txt, subtask_1_max_valid_01.txt, subtask_1_max_valid_02.txt, subtask_1_min_valid_01.txt, subtask_1_rand_01.txt, subtask_1_rand_02.txt, subtask_1_valid_01.txt, subtask_1_valid_02.txt |
Case Name | Status | Exec Time | Memory |
---|---|---|---|
sample_01.txt | WA | 1 ms | 256 KB |
sample_02.txt | AC | 1 ms | 256 KB |
sample_03.txt | WA | 1 ms | 256 KB |
subtask_1_invalid_01.txt | AC | 14 ms | 2040 KB |
subtask_1_invalid_02.txt | AC | 4 ms | 768 KB |
subtask_1_max_01.txt | AC | 16 ms | 2168 KB |
subtask_1_max_02.txt | AC | 16 ms | 2168 KB |
subtask_1_max_valid_01.txt | WA | 16 ms | 2168 KB |
subtask_1_max_valid_02.txt | WA | 16 ms | 2168 KB |
subtask_1_min_valid_01.txt | WA | 1 ms | 256 KB |
subtask_1_rand_01.txt | AC | 10 ms | 1404 KB |
subtask_1_rand_02.txt | AC | 15 ms | 2168 KB |
subtask_1_valid_01.txt | WA | 9 ms | 1276 KB |
subtask_1_valid_02.txt | WA | 4 ms | 768 KB |