제출 #1196995

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1196995		mychecksedad	Ski 2 (JOI24_ski2)	C++20	0 / 100	2104 ms	194296 KiB

Main

/* Author : Mychecksdead  */
#include<bits/stdc++.h>
using namespace std;
#define ll long long int
#define MOD (1000000000+7)
#define MOD1 (998244353)
#define pb push_back
#define all(x) x.begin(), x.end()
#define en cout << '\n'
#define ff first
#define ss second
#define pii pair<int,int>
#define vi vector<int>
const int N = 300+100, M = 1e5+10, K = 52, MX = 30;
const ll INF = 1e18;

int n;
ll k, p[N], dp[N][N][N][2], mn[N];
array<ll, 2> a[N], b[N];
void solve(){
  cin >> n >> k;
  for(int i = 1; i <= n; ++i){
    cin >> a[i][0] >> a[i][1];
    ++a[i][0];
  }
  ll ans = INF;
  int m = 100;
  for(int i = 0; i <= m; ++i) p[i] = 0, mn[i] = INF;
  for(int i = 1; i <= n; ++i){
    p[a[i][0]]++;
    mn[a[i][0]] = min(mn[a[i][0]], a[i][1]);
  }
  for(int i = 1; i <= m; ++i) p[i] += p[i - 1], mn[i] = min(mn[i], mn[i - 1]);
  for(int h = 0; h <= m; ++h){
    for(int i = 0; i <= n; ++i){
      for(int l = 0; l <= n; ++l) dp[h][i][l][0] = dp[h][i][l][1] = INF;
    }
  }
  sort(a+1, a+1+n);

  dp[0][0][0][0] = 0;
  for(int h = 1; h <= a[n][0] + n; ++h){
    // for(int j = 0; j <= p[h - 1]; ++j){
    //   int sz = j + p[h] - p[h - 1];
    //   for(int mx = sz; mx <= n; ++mx){
    //     dp[h][0][mx] = min(dp[h][0][mx], dp[h - 1][j][mx]);
    //   }
    // }
    for(int j = 0; j <= p[h - 1]; ++j){
      for(int i = 0; i <= p[h] - p[h - 1] + j; ++i){
        int sz = p[h] - p[h - 1] + j - i;
        for(int mx = 0; mx <= p[h]; ++mx){
          dp[h][i][max(mx, sz)][1] = min(dp[h][i][max(mx, sz)][1], dp[h - 1][j][mx][1] + max(0ll, (sz - mx) * mn[h - 1]) + i * k);
          if(sz == 1 && mx == 0 && j == p[h - 1]){
            // if(h == 1){
            //   cout << j << ' ' << i << ' ' << dp[h-1][j][mx][0] << "wtf\n";
            // }
            dp[h][i][max(mx, sz)][1] = min(dp[h][i][max(mx, sz)][1], dp[h - 1][j][mx][0] + i * k);
          }
          if(sz == 0 && mx == 0 && i == p[h] && j == p[h - 1]){
            dp[h][i][max(mx, sz)][0] = min(dp[h][i][max(mx, sz)][0], dp[h - 1][j][mx][0] + i * k);
          }
        }
      }
    }
    // for(int j = 0; j <= n; ++j){
    //   for(int mx = 0; mx <= n; ++mx){
    //     cout << h << ' ' << j << ' ' << mx << ' ' << dp[h][j][mx][0] << ' ' << dp[h][j][mx][1] << '\n';
    //   }
    //   en;
    // }
    // en;
  }
  // for(int i = 1; i <= n; ++i){
  //   cout << b[i][0] << ' ' << b[i][1] << '\n';
  // }
  for(int h = a[n][0]; h <= a[n][0] + n; ++h){
    for(int mx = 1; mx <= n; ++mx) ans = min(ans, dp[h][0][mx][1]);
  }
  cout << ans;
}


int main(){
  cin.tie(0); ios::sync_with_stdio(0);
  int tt = 1, aa;
  // freopen("in.txt", "r", stdin);
  // freopen("out.txt", "w", stdout);
  while(tt--){
    solve();
    en;
  }
  cerr<<"time taken : "<<(float)clock()/CLOCKS_PER_SEC<<" seconds\n";
  return 0;
} 

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