Submission #1197003

#	Time	Username	Problem	Language	Result	Execution time	Memory
1197003		mychecksedad	Ski 2 (JOI24_ski2)	C++20	0 / 100	608 ms	880380 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+5, M = 1e5+10, K = 52, MX = 30;
const ll INF = 1e14;

int n;
ll k, p[605], dp[605][N][N][2], mn[605];
array<ll, 2> a[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 = 605;
  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 <= p[h]; ++i){
      for(int l = 0; l <= p[h]; ++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 = 1; 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(p[h] > p[h - 1]){
      dp[h][p[h] - 1][1][1] = min(dp[h][p[h] - 1][1][1], dp[h - 1][p[h - 1]][0][0] + (p[h] - 1) * k);
    }
    dp[h][p[h]][0][0] = min(dp[h][p[h]][0][0], dp[h - 1][p[h - 1]][0][0] + p[h] * k);
  }
  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;
} 

Compilation message (stderr)

Main.cpp: In function 'void solve()':
Main.cpp:28:36: warning: iteration 605 invokes undefined behavior [-Waggressive-loop-optimizations]
   28 |   for(int i = 0; i <= m; ++i) p[i] = 0, mn[i] = INF;
      |                               ~~~~~^~~
Main.cpp:28:20: note: within this loop
   28 |   for(int i = 0; i <= m; ++i) p[i] = 0, mn[i] = INF;
      |                  ~~^~~~
Main.cpp:33:55: warning: iteration 604 invokes undefined behavior [-Waggressive-loop-optimizations]
   33 |   for(int i = 1; i <= m; ++i) p[i] += p[i - 1], mn[i] = min(mn[i], mn[i - 1]);
      |                                                 ~~~~~~^~~~~~~~~~~~~~~~~~~~~~~
Main.cpp:33:20: note: within this loop
   33 |   for(int i = 1; i <= m; ++i) p[i] += p[i - 1], mn[i] = min(mn[i], mn[i - 1]);
      |                  ~~^~~~
Main.cpp:35:28: warning: iteration 605 invokes undefined behavior [-Waggressive-loop-optimizations]
   35 |     for(int i = 0; i <= p[h]; ++i){
      |                         ~~~^
Main.cpp:34:20: note: within this loop
   34 |   for(int h = 0; h <= m; ++h){
      |                  ~~^~~~
Main.cpp:28:36: warning: 'void* __builtin_memset(void*, int, long unsigned int)' writing 4848 bytes into a region of size 4840 overflows the destination [-Wstringop-overflow=]
   28 |   for(int i = 0; i <= m; ++i) p[i] = 0, mn[i] = INF;
      |                               ~~~~~^~~
Main.cpp:18:7: note: destination object 'p' of size 4840
   18 | ll k, p[605], dp[605][N][N][2], mn[605];
      |       ^

• Subtask 1: 0 / 5
• Subtask 2: 0 / 12
• Subtask 3: 0 / 9
• Subtask 4: 0 / 33
• Subtask 5: 0 / 27
• Subtask 6: 0 / 14