Submission #710085

#	Time	Username	Problem	Language	Result	Execution time	Memory
710085		safaricola	Money (IZhO17_money)	C++17	0 / 100	1 ms	212 KiB

money

#include <bits/stdc++.h>
#define ll long long
#define pb push_back
#define pi pair <int, int>
#define pii pair <pi, int>
#define rep(i,n) for(ll i = 1; i <= n; i++)
#define fi first
#define se second
using namespace std;
int n, a[1000010],mx,mi;
bool vis[1000010];
int main(){
    ios_base::sync_with_stdio(false); cin.tie(0);
   cin>>n;
   rep(i,n)cin>>a[i];
   int ans=1;
   mx=a[n];
   for(int i=n; i>1; i--){ 
      if(a[i-1]>a[i]){
         vis[mi]=true;
         vis[mx]=true;
         mx=a[i-1];
         ans++;
         //cout<<1;
      }else{
         mi=a[i-1];
         if(a[i]!=a[i-1]+1&&!vis[mx-1]){
            ans++;
            vis[mi]=true;
            vis[mx]=true;
            mx=a[i-1];
            //cout<<2;
         }else if(a[i]!=a[i-1]+1&&!vis[mi+1]){
            ans++;
            vis[mi]=true;
            vis[mx]=true;
            mx=a[i-1];
            //cout<<3;
         }
      }
      mi=a[i-1];
      //cout<<mi<<' '<<mx<<' '<<ans<<endl;
      //rep(i,n)cout<<vis[i];cout<<endl;
   }
   cout<<ans;
}

• Subtask 1: 0 / 9
• Subtask 2: 0 / 16
• Subtask 3: 0 / 20
• Subtask 4: 0 / 55