Submission #1134758

#	Time	Username	Problem	Language	Result	Execution time	Memory
1134758		mychecksedad	Mizuyokan 2 (JOI23_mizuyokan2)	C++20	0 / 100	4094 ms	7864 KiB

mizuyokan2

/* 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 = 1e6+100, M = 1e5+10, K = 52, MX = 200;


int n;
ll a[N], pref[N];
void solve(){
  cin >> n;
  for(int i = 1; i <= n; ++i){
    cin >> a[i];
  }
  a[0] = -1;
  int q; cin >> q;
  for(int i = 0; i < q; ++i){
    int x, y, A, B; cin >> x >> y >> A >> B;
    ++A;
    a[x] = y;
    pref[0] = 0;
    for(int j = 1; j <= n; ++j){
      pref[j] = pref[j - 1] + a[j];
    }
    vector<array<ll, 2>> dp(n + 2);
    dp[A][0] = 1;
    dp[A][1] = 1;
    for(int j = A + 1; j <= B; ++j){
      int l = A, r = j - 1, go = j;
      while(l <= r){
        int m = l + r>>1;
        if(pref[j - 1] - pref[m - 1] > a[j]){
          go = m;
          l = m + 1;
        }else r = m - 1;
      }
      if(go == j) dp[j][0] = 1;
      else dp[j][0] = dp[go][1] + 1;

      for(int k = 0; k < MX; ++k){
        if(j - k < A) continue;
        if(pref[j] - pref[j - k - 1] > a[j - k - 1] || j - k == A){
          // cout << a[j-k-1] << ' ' << pref[j] - pref[j - k - 1] << "f\n";
          dp[j][1] = max(dp[j][1], dp[j - k - 1][0] + 1);
        }
      }
    }
    cout << max(dp[B][0], dp[B][1]) << '\n';
  }
}


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;
} 

• Subtask 1: 0 / 6
• Subtask 2: 0 / 9
• Subtask 3: 0 / 13
• Subtask 4: 0 / 32
• Subtask 5: 0 / 29
• Subtask 6: 0 / 11