Submission #1131198


Source Code Expand

#include <sstream>
#include <vector>
#include <algorithm>
#include <cstring>
#include <cstdlib>
#include <iostream>
#include <string>
#include <cassert>
#include <ctime>
#include <map>
#include <math.h>
#include <cstdio>
#include <set>
#include <deque>
#include <memory.h>
#include <queue>

#pragma comment(linker, "/STACK:64000000")
typedef long long ll;

using namespace std;

const int MAXN = 1 << 18;
const int MOD = 1000 * 1000 * 1000 + 7;
const int INF = 2e9;
const double PI = acos(-1.0);

int main() {
#ifdef _MSC_VER
	freopen("input.txt", "r", stdin);
#endif

	int n;
	while (cin >> n) {
		vector<int> a(n);
		for (int i = 0; i < n; i++) cin >> a[i];

		int cur = 0;
		int ans = 1;
		for (int i = 0; i < n; i++) {
			if (a[i] < (i - cur) * 2 + 1) {
				ans = 1LL * ans * (i - cur + 1) % MOD;
				cur++;
			}
			else {
				continue;
			}
		}
		while (cur < n) ans = 1LL * ans * (n - cur++) % MOD;
		cout << ans << endl;
	}

	return 0;
}

Submission Info

Submission Time
Task A - Robot Racing
User izban
Language C++14 (GCC 5.4.1)
Score 900
Code Size 997 Byte
Status AC
Exec Time 41 ms
Memory 640 KB

Judge Result

Set Name Sample Subtask All
Score / Max Score 0 / 0 500 / 500 400 / 400
Status
AC × 4
AC × 14
AC × 28
Set Name Test Cases
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 29 ms 640 KB
2_01.txt AC 31 ms 640 KB
2_02.txt AC 41 ms 640 KB
2_03.txt AC 32 ms 640 KB
2_04.txt AC 30 ms 640 KB
2_05.txt AC 31 ms 640 KB
2_06.txt AC 31 ms 640 KB
2_07.txt AC 31 ms 640 KB
2_08.txt AC 30 ms 640 KB
2_09.txt AC 30 ms 640 KB
2_10.txt AC 31 ms 640 KB
2_11.txt AC 40 ms 640 KB
2_12.txt AC 41 ms 640 KB