Submission #1006413

#	Time	Username	Problem	Language	Result	Execution time	Memory
1006413		christinelynn	Bigger segments (IZhO19_segments)	C++17	0 / 100	1 ms	4444 KiB

segments

#include <bits/stdc++.h>
#define ll long long
#define pb push_back
#define pp pop_back
#define mp make_pair
#define fi first
#define se second
#define lb lower_bound
#define ub upper_bound
#define pll pair<ll,ll> 
#define pii pair<int,int> 
#define vl vector<ll> 
#define nikah ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
const ll maxn = 5e5+7, modn1 = 1e9+7, modn2 = 998244353;
using namespace std;

// kalo kamu ngga emas nanti nadya merasa bersalah, ayo san demi nadya!!!
// Kalo emang soalnya susah, pindah soal dulu 
// Jangan sampe diem, pikirin sesuatu, pasti bisa!!!
// Cobain semua approach, jangan ngestuck di satu pemikiran
// Jangan overthinking, jangan panik, tenangin pikiranmu

ll t,n;
ll a[maxn], pref[maxn],pos[maxn],dp[maxn];

void solve() {
  cin>>n;
  for (ll i=1; i<=n; i++) {
    cin>>a[i];
    pref[i] = a[i] + pref[i-1];
  }
  ll cur = 0;
  for (ll i=1; i<=n; i++) {
    pos[i] = cur;
    while (pref[i] - pref[cur] >= pref[cur] - pref[pos[cur]]) {
      cur++;
    }
     if (pos[i] != cur) {
       cur--;
       pos[i] = cur;
     }
    dp[i] = dp[pos[i]] + 1;
  }
  /*for (ll i=1; i<=n; i++) {
    cout<<dp[i]<<" ";
  }
  cout<<endl;
  for (ll i=1; i<=n; i++) {
    cout<<pos[i]<<" ";
  }*/
  cout<<dp[n];
}


int main () {
  nikah
  t = 1;
//  cin>>t;
  while (t--) {
    solve();
  //  cout<<endl;
  }
}

• Subtask 1: 0 / 13
• Subtask 2: 0 / 14
• Subtask 3: 0 / 10
• Subtask 4: 0 / 36
• Subtask 5: 0 / 27