Submission #1212877


Source Code Expand

#include <cstdlib>
#include <iostream>
int main(void) {
    const long long mod = 1000000007;
    int n;
	while (std::cin >> n) {
		long long ans = 1, stack = 0, *arr, *cnt;
		int fail = 0;
		arr = new long long[n];
		cnt = new long long[n];
		for (int i = 0; i < n; ++i) {
			std::cin >> arr[i];
			++cnt[(fail + 1) / 2];
			if(i == 0) {
				arr[0] = 1;
			}
			else{
				if(arr[i] >= arr[i - 1] + 2) {
					arr[i] = arr[i - 1] + 2;
				}
				if(arr[i - 1] + 1 == arr[i]) {
					++fail;
				}
			}
		}
		for (int i = 0; i < n; ++i) {
			stack += cnt[i];
			(ans *= stack) %= mod;
			--stack;
    	}
		std::cout << ans << std::endl;
		delete[] arr;
		delete[] cnt;
	}
	return EXIT_SUCCESS;
}

Submission Info

Submission Time
Task A - Robot Racing
User s8079
Language C++14 (GCC 5.4.1)
Score 900
Code Size 726 Byte
Status AC
Exec Time 41 ms
Memory 1408 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 30 ms 1408 KB
2_01.txt AC 31 ms 1024 KB
2_02.txt AC 41 ms 1024 KB
2_03.txt AC 31 ms 1280 KB
2_04.txt AC 31 ms 1152 KB
2_05.txt AC 31 ms 1024 KB
2_06.txt AC 31 ms 1024 KB
2_07.txt AC 31 ms 1024 KB
2_08.txt AC 30 ms 1024 KB
2_09.txt AC 31 ms 1024 KB
2_10.txt AC 31 ms 1024 KB
2_11.txt AC 41 ms 1024 KB
2_12.txt AC 40 ms 1024 KB