| # | 제출 시각 | 아이디 | 문제 | 언어 | 결과 | 실행 시간 | 메모리 |
|---|---|---|---|---|---|---|---|
| 496186 | 2021-12-21T01:01:08 Z | model_code | Magneti (COCI21_magneti) | C++17 | 109 ms | 6320 KB |
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
const int N=55;
const int L=1e4+5;
const int MOD=1e9+7;
int n, l;
int r[N];
int dp[2][N][L];
int pas[L+N][N];
int mul(int a, int b) {
return (ll)a*b%MOD;
}
int add(int a, int b) {
return (a+b)%MOD;
}
void load() {
scanf("%d %d", &n, &l);
for (int i=1; i<=n; ++i) scanf("%d", r+i);
sort(r+1, r+n+1);
}
void pascal() {
for (int i=0; i<=l+n; ++i) pas[i][0]=1;
for (int i=1; i<=l; ++i)
for (int j=1; j<=min(n, i); ++j)
pas[i][j]=add(pas[i-1][j], pas[i-1][j-1]);
}
int main() {
load();
pascal();
int x=0;
dp[0][0][0]=1;
for (int i=1; i<=n; ++i) {
x^=1;
dp[x][0][0]=0;
int R=r[i];
for (int j=1; j<=i; ++j) {
for (int k=1; k<=l; ++k) {
dp[x][j][k]=dp[!x][j-1][k-1];
if (k>=R) dp[x][j][k]=add(dp[x][j][k], mul(dp[!x][j][k-R], 2*j));
if (k>=2*R-1) dp[x][j][k]=add(dp[x][j][k], mul(dp[!x][j+1][k-2*R+1], j*(j+1)));
}
}
}
int sol=0;
for (int i=1; i<=l; ++i) sol=add(sol, mul(dp[x][1][i], pas[l-i+n][n]));
printf("%d", sol);
return 0;
}
Compilation message
| # | 결과 | 실행 시간 | 메모리 | Grader output |
|---|---|---|---|---|
| 1 | Correct | 109 ms | 6276 KB | Output is correct |
| 2 | Correct | 1 ms | 716 KB | Output is correct |
| 3 | Correct | 9 ms | 2764 KB | Output is correct |
| 4 | Correct | 2 ms | 2636 KB | Output is correct |
| 5 | Correct | 7 ms | 1484 KB | Output is correct |
| 6 | Correct | 32 ms | 4428 KB | Output is correct |
| 7 | Correct | 18 ms | 3736 KB | Output is correct |
| 8 | Correct | 1 ms | 844 KB | Output is correct |
| 9 | Correct | 6 ms | 2736 KB | Output is correct |
| 10 | Correct | 1 ms | 972 KB | Output is correct |
| # | 결과 | 실행 시간 | 메모리 | Grader output |
|---|---|---|---|---|
| 1 | Correct | 6 ms | 3148 KB | Output is correct |
| 2 | Correct | 1 ms | 1484 KB | Output is correct |
| 3 | Correct | 6 ms | 3148 KB | Output is correct |
| 4 | Correct | 2 ms | 2124 KB | Output is correct |
| 5 | Correct | 6 ms | 3148 KB | Output is correct |
| 6 | Correct | 1 ms | 1484 KB | Output is correct |
| 7 | Correct | 6 ms | 3148 KB | Output is correct |
| 8 | Correct | 1 ms | 588 KB | Output is correct |
| 9 | Correct | 2 ms | 1612 KB | Output is correct |
| 10 | Correct | 1 ms | 1228 KB | Output is correct |
| # | 결과 | 실행 시간 | 메모리 | Grader output |
|---|---|---|---|---|
| 1 | Correct | 2 ms | 588 KB | Output is correct |
| 2 | Correct | 1 ms | 460 KB | Output is correct |
| 3 | Correct | 2 ms | 588 KB | Output is correct |
| 4 | Correct | 1 ms | 596 KB | Output is correct |
| 5 | Correct | 1 ms | 604 KB | Output is correct |
| 6 | Correct | 0 ms | 472 KB | Output is correct |
| 7 | Correct | 1 ms | 600 KB | Output is correct |
| 8 | Correct | 1 ms | 472 KB | Output is correct |
| 9 | Correct | 1 ms | 472 KB | Output is correct |
| 10 | Correct | 1 ms | 472 KB | Output is correct |
| # | 결과 | 실행 시간 | 메모리 | Grader output |
|---|---|---|---|---|
| 1 | Correct | 109 ms | 6276 KB | Output is correct |
| 2 | Correct | 1 ms | 716 KB | Output is correct |
| 3 | Correct | 9 ms | 2764 KB | Output is correct |
| 4 | Correct | 2 ms | 2636 KB | Output is correct |
| 5 | Correct | 7 ms | 1484 KB | Output is correct |
| 6 | Correct | 32 ms | 4428 KB | Output is correct |
| 7 | Correct | 18 ms | 3736 KB | Output is correct |
| 8 | Correct | 1 ms | 844 KB | Output is correct |
| 9 | Correct | 6 ms | 2736 KB | Output is correct |
| 10 | Correct | 1 ms | 972 KB | Output is correct |
| 11 | Correct | 6 ms | 3148 KB | Output is correct |
| 12 | Correct | 1 ms | 1484 KB | Output is correct |
| 13 | Correct | 6 ms | 3148 KB | Output is correct |
| 14 | Correct | 2 ms | 2124 KB | Output is correct |
| 15 | Correct | 6 ms | 3148 KB | Output is correct |
| 16 | Correct | 1 ms | 1484 KB | Output is correct |
| 17 | Correct | 6 ms | 3148 KB | Output is correct |
| 18 | Correct | 1 ms | 588 KB | Output is correct |
| 19 | Correct | 2 ms | 1612 KB | Output is correct |
| 20 | Correct | 1 ms | 1228 KB | Output is correct |
| 21 | Correct | 2 ms | 588 KB | Output is correct |
| 22 | Correct | 1 ms | 460 KB | Output is correct |
| 23 | Correct | 2 ms | 588 KB | Output is correct |
| 24 | Correct | 1 ms | 596 KB | Output is correct |
| 25 | Correct | 1 ms | 604 KB | Output is correct |
| 26 | Correct | 0 ms | 472 KB | Output is correct |
| 27 | Correct | 1 ms | 600 KB | Output is correct |
| 28 | Correct | 1 ms | 472 KB | Output is correct |
| 29 | Correct | 1 ms | 472 KB | Output is correct |
| 30 | Correct | 1 ms | 472 KB | Output is correct |
| 31 | Correct | 105 ms | 6284 KB | Output is correct |
| 32 | Correct | 68 ms | 4688 KB | Output is correct |
| 33 | Correct | 105 ms | 6304 KB | Output is correct |
| 34 | Correct | 21 ms | 3332 KB | Output is correct |
| 35 | Correct | 101 ms | 6312 KB | Output is correct |
| 36 | Correct | 7 ms | 2648 KB | Output is correct |
| 37 | Correct | 106 ms | 6280 KB | Output is correct |
| 38 | Correct | 17 ms | 1652 KB | Output is correct |
| 39 | Correct | 100 ms | 6268 KB | Output is correct |
| 40 | Correct | 34 ms | 4396 KB | Output is correct |
| 41 | Correct | 104 ms | 6212 KB | Output is correct |
| 42 | Correct | 1 ms | 972 KB | Output is correct |
| 43 | Correct | 102 ms | 6212 KB | Output is correct |
| 44 | Correct | 10 ms | 2764 KB | Output is correct |
| 45 | Correct | 99 ms | 6320 KB | Output is correct |
| 46 | Correct | 2 ms | 2380 KB | Output is correct |
| 47 | Correct | 10 ms | 3904 KB | Output is correct |
| 48 | Correct | 4 ms | 1740 KB | Output is correct |
| 49 | Correct | 3 ms | 2520 KB | Output is correct |
| 50 | Correct | 1 ms | 460 KB | Output is correct |