Submission #902570

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
902570	2024-01-10 18:19:36	Spade1	Skyscraper (JOI16_skyscraper)	C++14	0 / 100	2 ms	2140 KiB

skyscraper

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#include <bits/stdc++.h>
#define ll long long
#define pii pair<int, int>
#define pll pair<ll ll>
#define st first
#define nd second
#define pb push_back
using namespace std;
const int maxN = 1e2 + 10;
const int maxL = 1e3 + 10;
const int M = 1e9 + 7;
ll dp[maxN][maxN][2*maxL][3], a[maxN];
void solve() {
    ll n, l; cin >> n >> l;
    for (int i = 1; i <= n; ++i) cin >> a[i];
    sort(a+1, a+n+1);
    dp[0][0][l][0] = 1;
    for (int i = 1; i <= n; ++i) {
        for (int j = 1; j <= n; ++j) {
            for (int k = 0; k <= 2*l; ++k) {
                if (k+2*a[i] <= 2*l) {
                    dp[i][j][k][0] = (dp[i][j][k][0] + j*dp[i-1][j-1][k+2*a[i]][0]) % M;
                    dp[i][j][k][1] = (dp[i][j][k][1] + (j-1)*dp[i-1][j-1][k+2*a[i]][1]) % M;
                    dp[i][j][k][2] = (dp[i][j][k][2] + (j-2)*dp[i-1][j-1][k+2*a[i]][2]) % M;
                }
                if (k+a[i] <= 2*l) {
                    dp[i][j][k][1] = (dp[i][j][k][1] + 2*dp[i-1][j-1][k+a[i]][0]) % M;
 
 
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• Subtask 1: 0 / 5
• Subtask 2: 0 / 15
• Subtask 3: 0 / 80