Submission #1573312


Source Code Expand

#include <bits/stdc++.h>
using namespace std;

#define rep(i,n) for(long long i = 0; i < (long long)(n); i++)
using ll = long long; using vll = vector<ll>;
static const long long mo = 1e9+7;

int main(void) {
    ll n; cin >> n;
    vll a(n); rep(i, n) cin >> a[i];

    ll ret = 1, c = 0;
    rep(i, n) 
        if (a[i] < 2*(i-c)+1) 
            (ret *= i + 1 - c) %= mo, c++;

    rep(i, n-c) (ret *= (i + 1)) %= mo;
    cout << ret << endl;

    return 0;
}

Submission Info

Submission Time
Task A - Robot Racing
User hamko
Language C++14 (GCC 5.4.1)
Score 900
Code Size 483 Byte
Status AC
Exec Time 43 ms
Memory 1024 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 1024 KB
2_01.txt AC 31 ms 1024 KB
2_02.txt AC 42 ms 1024 KB
2_03.txt AC 30 ms 1024 KB
2_04.txt AC 30 ms 1024 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 31 ms 1024 KB
2_09.txt AC 30 ms 1024 KB
2_10.txt AC 31 ms 1024 KB
2_11.txt AC 40 ms 1024 KB
2_12.txt AC 43 ms 1024 KB