Submission #1131171


Source Code Expand

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

using ll = long long;
using ull = unsigned long long;
using ld = long double;

#define forn(i, a, n) for (int i = a; i < n; ++i)
#define ford(i, a, n) for (int i = n - 1; i >= a; --i)
#define fore(i, a, n) for (int i = a; i <= n; ++i)
#define all(a) (a).begin(), (a).end()
#define fs first
#define sn second
#define trace(a)\
    for (auto i : a) cerr << i << ' ';\
    cerr << '\n'
#define eb emplace_back

#ifndef M_PI
const ld M_PI = acos(-1.0);
#endif

const ld eps = 1e-9;
const int INF = 2000000000;
const ll LINF = 1ll * INF * INF;
const ll MOD = 1000000007;

int main() {
    ios::sync_with_stdio(false);
    cin.tie(0);
    int n;
    cin >> n;
    int cnt = 0;
    ll ans = 1;
    while (n--) {
        int x;
        cin >> x;
        if (x >= 2 * cnt + 1) ++cnt;
        else ans = ans * (cnt + 1) % MOD;
    }
    fore(i, 1, cnt) ans = ans * i % MOD;
    cout << ans << '\n';
}

Submission Info

Submission Time
Task A - Robot Racing
User khadaev
Language C++14 (GCC 5.4.1)
Score 900
Code Size 981 Byte
Status AC
Exec Time 11 ms
Memory 892 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 6 ms 892 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 9 ms 256 KB
2_01.txt AC 9 ms 256 KB
2_02.txt AC 11 ms 256 KB
2_03.txt AC 9 ms 256 KB
2_04.txt AC 9 ms 256 KB
2_05.txt AC 9 ms 256 KB
2_06.txt AC 9 ms 256 KB
2_07.txt AC 9 ms 256 KB
2_08.txt AC 9 ms 256 KB
2_09.txt AC 9 ms 256 KB
2_10.txt AC 9 ms 256 KB
2_11.txt AC 11 ms 256 KB
2_12.txt AC 11 ms 256 KB