Submission #2151810
Source Code Expand
#include <bits/stdc++.h> using namespace std; const int N = 100005; const int mod = 1e9 + 7; int n, x[N]; int cnt[N]; int main() { ios_base::sync_with_stdio(false); cin.tie(0); cin >> n; for (int i = 1; i <= n; ++i) cin >> x[i]; int cannot = 0; for (int i = 1; i <= n; ++i) { cnt[cannot]++; // update cannot if (x[i] < 2 * (i - cannot) - 1) ++cannot; } int cur = 0; int res = 1; for (int i = 0; i < n; ++i) { cur += cnt[i]; res = 1LL * res * (cur - i) % mod; } cout << res << endl; }
Submission Info
Submission Time | |
---|---|
Task | A - Robot Racing |
User | cheater2k |
Language | C++14 (GCC 5.4.1) |
Score | 900 |
Code Size | 602 Byte |
Status | AC |
Exec Time | 12 ms |
Memory | 896 KB |
Judge Result
Set Name | Sample | Subtask | All | ||||||
---|---|---|---|---|---|---|---|---|---|
Score / Max Score | 0 / 0 | 500 / 500 | 400 / 400 | ||||||
Status |
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Set Name | Test Cases |
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Sample | 0_00.txt, 0_01.txt, 0_02.txt, 0_03.txt |
Subtask | 0_00.txt, 0_01.txt, 0_02.txt, 1_00.txt, 1_01.txt, 1_02.txt, 1_03.txt, 1_04.txt, 1_05.txt, 1_06.txt, 1_07.txt, 1_08.txt, 1_09.txt, 1_10.txt |
All | 0_00.txt, 0_01.txt, 0_02.txt, 0_03.txt, 1_00.txt, 1_01.txt, 1_02.txt, 1_03.txt, 1_04.txt, 1_05.txt, 1_06.txt, 1_07.txt, 1_08.txt, 1_09.txt, 1_10.txt, 2_00.txt, 2_01.txt, 2_02.txt, 2_03.txt, 2_04.txt, 2_05.txt, 2_06.txt, 2_07.txt, 2_08.txt, 2_09.txt, 2_10.txt, 2_11.txt, 2_12.txt |
Case Name | Status | Exec Time | Memory |
---|---|---|---|
0_00.txt | AC | 1 ms | 256 KB |
0_01.txt | AC | 1 ms | 256 KB |
0_02.txt | AC | 1 ms | 256 KB |
0_03.txt | AC | 1 ms | 256 KB |
1_00.txt | AC | 1 ms | 256 KB |
1_01.txt | AC | 1 ms | 256 KB |
1_02.txt | AC | 1 ms | 256 KB |
1_03.txt | AC | 1 ms | 256 KB |
1_04.txt | AC | 1 ms | 256 KB |
1_05.txt | AC | 1 ms | 256 KB |
1_06.txt | AC | 1 ms | 256 KB |
1_07.txt | AC | 1 ms | 256 KB |
1_08.txt | AC | 1 ms | 256 KB |
1_09.txt | AC | 1 ms | 256 KB |
1_10.txt | AC | 1 ms | 256 KB |
2_00.txt | AC | 10 ms | 896 KB |
2_01.txt | AC | 10 ms | 640 KB |
2_02.txt | AC | 12 ms | 640 KB |
2_03.txt | AC | 10 ms | 768 KB |
2_04.txt | AC | 10 ms | 768 KB |
2_05.txt | AC | 10 ms | 640 KB |
2_06.txt | AC | 10 ms | 640 KB |
2_07.txt | AC | 10 ms | 640 KB |
2_08.txt | AC | 10 ms | 640 KB |
2_09.txt | AC | 10 ms | 640 KB |
2_10.txt | AC | 10 ms | 640 KB |
2_11.txt | AC | 12 ms | 640 KB |
2_12.txt | AC | 12 ms | 640 KB |