Submission #1131173


Source Code Expand

#include <iostream>
#include <vector>
#include <cstdio>
#include <algorithm>
#include <set>
#include <map>
#include <cassert>
#include <numeric>
#include <string>
#include <cstring>
#include <cmath>
using namespace std;

#ifdef LOCAL
	#define eprintf(...) fprintf(stderr, __VA_ARGS__)
#else
	#define eprintf(...) 42
#endif

typedef long long int int64;


const int MOD = (int) 1e9 + 7;
void sadd(int &a, int b)
{
	a += b;
	if (a >= MOD) a -= MOD;
}
int add(int a, int b)
{
	sadd(a, b);
	return a;
}
int mul(int a, int b)
{
	return (a * 1LL * b) % MOD;
}

const int N = (int) 1e5 + 100;
int a[N];

int main(int,  char **)
{
#ifdef LOCAL
//	freopen("input.txt", "r", stdin);
//	freopen("output.txt", "w", stdout);
#endif

	int n;
	scanf("%d", &n);
	for (int i = 0; i < n; i++)
	{
		scanf("%d", &a[i] );
	}

	int cnt = 0;
	int ans = 1;
	for (int i = 0; i < n; i++)
	{
		int cur = a[i];
		int good = 2 * cnt + 1;
		if (cur >= good)
		{
			cnt++;
			continue;
		}
		ans = mul(ans, cnt + 1);
	}
	for (int i = 1; i <= cnt; i++)
		ans = mul(ans, i);
	printf("%d\n", ans);


	return 0;
}

Submission Info

Submission Time
Task A - Robot Racing
User Merkurev
Language C++14 (GCC 5.4.1)
Score 900
Code Size 1156 Byte
Status AC
Exec Time 13 ms
Memory 764 KB

Compile Error

./Main.cpp: In function ‘int main(int, char**)’:
./Main.cpp:50:17: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d", &n);
                 ^
./Main.cpp:53:22: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d", &a[i] );
                      ^

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 10 ms 764 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 11 ms 640 KB
2_01.txt AC 11 ms 640 KB
2_02.txt AC 13 ms 640 KB
2_03.txt AC 11 ms 640 KB
2_04.txt AC 11 ms 640 KB
2_05.txt AC 11 ms 640 KB
2_06.txt AC 11 ms 640 KB
2_07.txt AC 11 ms 640 KB
2_08.txt AC 11 ms 640 KB
2_09.txt AC 11 ms 640 KB
2_10.txt AC 11 ms 640 KB
2_11.txt AC 13 ms 640 KB
2_12.txt AC 13 ms 640 KB