QOJ.ac

QOJ

ID题目提交者结果用时内存语言文件大小提交时间测评时间
#723153#9561. 树数叔术dalao_see_me100 ✓1522ms18084kbC++142.3kb2024-11-07 21:17:352024-11-07 21:17:37

Judging History

你现在查看的是最新测评结果

  • [2024-11-07 21:17:37]
  • 评测
  • 测评结果:100
  • 用时:1522ms
  • 内存:18084kb
  • [2024-11-07 21:17:35]
  • 提交

answer

#include <bits/stdc++.h>
using namespace std;
int read() {
    int x = 0, f = 1; char c = getchar();
    while (c < '0' || c > '9') {if (c == '-') f = -f; c = getchar();}
    while (c >= '0' && c <= '9') {x = x * 10 + (c ^ 48); c = getchar();}
    return x * f;
}
const int N = 155;
int n, V, mod;
int C[N][N], f[N][N][N], g[N][N][3], fac[N], t[N][N];
void Solve() {
    n = read(); V = read(); mod = read();
    if (V >= n) return void(puts("0"));
    f[0][1][0] = C[0][0] = fac[0] = 1;
    for (int i = 1; i <= n; i++) fac[i] = 1LL * fac[i - 1] * i % mod;
    for (int i = 1; i <= n; i++) {
        C[i][0] = 1;
        for (int j = 1; j <= i; j++) C[i][j] = (C[i - 1][j] + C[i - 1][j - 1]) % mod;
    }
    for (int i = 0; i <= n; i++) {
        t[i][0] = 1;
        for (int j = 1; j <= n; j++) t[i][j] = 1LL * t[i][j - 1] * (i + j - 1) % mod;
    }
    for (int i = 0; i < V; i++) {
        for (int j = 0; j <= n; j++)
            for (int k = 0; j + k <= n; k++)
                g[j][k][0] = g[j][k][1] = g[j][k][2] = 0;
        for (int j = 1; j <= n; j++)
            for (int k = 0; j + k <= n; k++)
                for (int c = 0; j + k + c <= n; c++)
                    g[j + c][k][min(c, 2)] = (g[j + c][k][min(c, 2)] + 1LL * f[i][j][k] * C[j + c][c] % mod * t[j + k - 1][c]) % mod;
        for (int j = 1; j <= n; j++)
            for (int k = 0; j + k <= n; k++)
                for (int c = 0; c <= k; c++) {
                    int s = g[j][k][2]; if (c) s = (s + g[j][k][1]) % mod; if (c > 1) s = (s + g[j][k][0]) % mod;
                    f[i + 1][j + c][k - c] = (f[i + 1][j + c][k - c] + 1LL * s * C[k][c] % mod * fac[c] % mod * C[j + c][c]) % mod;
                }
        for (int j = 1; j <= n; j++)
            for (int k = 0; j + k <= n; k++) {
                f[i + 1][j + 1][k] = (f[i + 1][j + 1][k] + 1LL * f[i][j][k] * (j + k + j + k - 1) * (j + 1)) % mod;
                f[i + 1][j + 1][k + 1] = (f[i + 1][j + 1][k + 1] + 1LL * f[i][j][k] * (j + k - 1) * (j + 1)) % mod;
                if (k) f[i + 1][j + 1][k - 1] = (f[i + 1][j + 1][k - 1] + 1LL * f[i][j][k] * k * (j + 1)) % mod;
            }
    }
    printf("%d\n", f[V][n][0]);
}
int main() {
    // freopen(".in", "r", stdin);
    // freopen(".out", "w", stdout);
    int _ = 1;
    while (_--) Solve();
    return 0;
}

详细

Subtask #1:

score: 5
Accepted

Test #1:

score: 5
Accepted
time: 0ms
memory: 3572kb

input:

1 1 624295285

output:

0

result:

ok single line: '0'

Test #2:

score: 5
Accepted
time: 0ms
memory: 3640kb

input:

4 684813415 564954712

output:

0

result:

ok single line: '0'

Test #3:

score: 5
Accepted
time: 0ms
memory: 3884kb

input:

4 2 844826878

output:

24

result:

ok single line: '24'

Test #4:

score: 5
Accepted
time: 0ms
memory: 3648kb

input:

4 17724073 252218682

output:

0

result:

ok single line: '0'

Test #5:

score: 5
Accepted
time: 0ms
memory: 3872kb

input:

4 3 697681963

output:

384

result:

ok single line: '384'

Subtask #2:

score: 15
Accepted

Test #6:

score: 15
Accepted
time: 0ms
memory: 3880kb

input:

6 4 956647977

output:

238320

result:

ok single line: '238320'

Test #7:

score: 15
Accepted
time: 0ms
memory: 3512kb

input:

6 450615260 491361886

output:

0

result:

ok single line: '0'

Test #8:

score: 15
Accepted
time: 0ms
memory: 3828kb

input:

6 5 339344353

output:

933120

result:

ok single line: '933120'

Test #9:

score: 15
Accepted
time: 0ms
memory: 3824kb

input:

6 3 842228619

output:

23760

result:

ok single line: '23760'

Test #10:

score: 15
Accepted
time: 0ms
memory: 3828kb

input:

6 5 331699652

output:

933120

result:

ok single line: '933120'

Subtask #3:

score: 30
Accepted

Test #11:

score: 30
Accepted
time: 10ms
memory: 4852kb

input:

48 26 424594716

output:

362283012

result:

ok single line: '362283012'

Test #12:

score: 30
Accepted
time: 0ms
memory: 3512kb

input:

49 1000000000 738885247

output:

0

result:

ok single line: '0'

Test #13:

score: 30
Accepted
time: 15ms
memory: 6640kb

input:

48 39 688951620

output:

598399200

result:

ok single line: '598399200'

Test #14:

score: 30
Accepted
time: 0ms
memory: 3636kb

input:

50 476039414 292870080

output:

0

result:

ok single line: '0'

Test #15:

score: 30
Accepted
time: 21ms
memory: 5644kb

input:

50 48 245196368

output:

123576912

result:

ok single line: '123576912'

Subtask #4:

score: 50
Accepted

Test #16:

score: 50
Accepted
time: 0ms
memory: 3692kb

input:

150 526250070 197316869

output:

0

result:

ok single line: '0'

Test #17:

score: 50
Accepted
time: 1173ms
memory: 15236kb

input:

149 116 671784452

output:

18945228

result:

ok single line: '18945228'

Test #18:

score: 50
Accepted
time: 1380ms
memory: 17600kb

input:

146 144 906402626

output:

438777234

result:

ok single line: '438777234'

Test #19:

score: 50
Accepted
time: 1394ms
memory: 17620kb

input:

147 143 705666477

output:

70408701

result:

ok single line: '70408701'

Test #20:

score: 50
Accepted
time: 1522ms
memory: 18084kb

input:

150 147 453481175

output:

336290325

result:

ok single line: '336290325'