oj.uz

답안 #996140

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
996140 2024-06-10T08:14:40 Z LOLOLO Zapina (COCI20_zapina) C++14
55 / 110
 191 ms 2296 KB 
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
 
#define           f     first
#define           s     second
#define           pb    push_back
#define           ep    emplace
#define           eb    emplace_back
#define           lb    lower_bound
#define           ub    upper_bound
#define       all(x)    x.begin(), x.end()
#define      rall(x)    x.rbegin(), x.rend()
#define   uniquev(v)    sort(all(v)), (v).resize(unique(all(v)) - (v).begin())
#define     mem(f,x)    memset(f , x , sizeof(f))
#define        sz(x)    (ll)(x).size()
#define  __lcm(a, b)    (1ll * ((a) / __gcd((a), (b))) * (b))
#define          mxx    *max_element
#define          mnn    *min_element
#define    cntbit(x)    __builtin_popcountll(x)
#define       len(x)    (int)(x.length())
 
ll mod = 1e9 + 7;
const int N = 340;
int dp[N][N][2];
ll c[N][N];

ll cal(int x, int y) {
    if (x > y)
        return 0;

    if (x == 0)
        return 1;

    if (c[x][y] != -1)
        return c[x][y];

    return c[x][y] = (cal(x, y - 1) + cal(x - 1, y - 1)) % mod;
}

ll dq(int id, int ss, int is) {
    if (id == 0) {
        return is && (ss == 0);
    }

    if (dp[id][ss][is] != -1) {
        return dp[id][ss][is];
    }

    ll ans = 0;
    for (int j = 0; j <= ss; j++) {
        ll cc = dq(id - 1, ss - j, (j == id) || is) * cal(j, ss);
        ans += cc;
        ans %= mod;
    }

    return dp[id][ss][is] = ans;
}

int main() {
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);

    mem(c, -1);
    mem(dp, -1);

    int n;
    cin >> n;

    cout << dq(n, n, 0) << '\n';
    return 0;
}

Subtask #1
22.0 / 22.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 2140 KB Output is correct
2 Correct 1 ms 2140 KB Output is correct
3 Correct 1 ms 2140 KB Output is correct
4 Correct 1 ms 2140 KB Output is correct
5 Correct 1 ms 2140 KB Output is correct

Subtask #2
33.0 / 33.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 2140 KB Output is correct
2 Correct 1 ms 2140 KB Output is correct
3 Correct 1 ms 2140 KB Output is correct
4 Correct 1 ms 2140 KB Output is correct
5 Correct 1 ms 2140 KB Output is correct
6 Correct 1 ms 2140 KB Output is correct
7 Correct 1 ms 2140 KB Output is correct
8 Correct 1 ms 2140 KB Output is correct
9 Correct 2 ms 2136 KB Output is correct
10 Correct 1 ms 2140 KB Output is correct
11 Correct 1 ms 2140 KB Output is correct
12 Correct 1 ms 2140 KB Output is correct
13 Correct 1 ms 2140 KB Output is correct
14 Correct 1 ms 2140 KB Output is correct
15 Correct 1 ms 2140 KB Output is correct
16 Correct 1 ms 2140 KB Output is correct

Subtask #3
0 / 55.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 2140 KB Output is correct
2 Correct 1 ms 2140 KB Output is correct
3 Correct 1 ms 2140 KB Output is correct
4 Correct 1 ms 2140 KB Output is correct
5 Correct 1 ms 2140 KB Output is correct
6 Correct 1 ms 2140 KB Output is correct
7 Correct 1 ms 2140 KB Output is correct
8 Correct 1 ms 2140 KB Output is correct
9 Correct 2 ms 2136 KB Output is correct
10 Correct 1 ms 2140 KB Output is correct
11 Correct 1 ms 2140 KB Output is correct
12 Correct 1 ms 2140 KB Output is correct
13 Correct 1 ms 2140 KB Output is correct
14 Correct 1 ms 2140 KB Output is correct
15 Correct 1 ms 2140 KB Output is correct
16 Correct 1 ms 2140 KB Output is correct
17 Correct 139 ms 2140 KB Output is correct
18 Correct 2 ms 2140 KB Output is correct
19 Correct 32 ms 2140 KB Output is correct
20 Correct 1 ms 2140 KB Output is correct
21 Correct 191 ms 2284 KB Output is correct
22 Correct 21 ms 2140 KB Output is correct
23 Correct 3 ms 2140 KB Output is correct
24 Correct 40 ms 2140 KB Output is correct
25 Correct 26 ms 2296 KB Output is correct
26 Correct 63 ms 2140 KB Output is correct
27 Incorrect 1 ms 2140 KB Output isn't correct
28 Halted 0 ms 0 KB -