Submission #1309773

#	Time	Username	Problem	Language	Result	Execution time	Memory
1309773		Rares	송신탑 (IOI22_towers)	C++20	23 / 100	4094 ms	1564 KiB

towers

#include <bits/stdc++.h>
#include "towers.h"
using namespace std;
/**ifstream fin ("date.in");
ofstream fout ("date.out");
#define cin fin
#define cout fout**/

const int MAXN=1e5+10;

int n,a[MAXN];

void init (int N, vector <int> h){
    n=N;
    for (int i=0;i<n;++i) a[i+1]=h[i];


}

int max_towers (int l, int r, int d){
    l++;
    r++;
    stack <pair <int,int>> st;
    for (int i=l;i<=r;++i){
        if (st.empty ()){
            st.push ({i,0});
        }
        else{
            pair <int,int> p=st.top ();
            if (a[i]+d<=p.second and a[p.first]+d<=p.second){
                st.push ({i,0});
            }
            else{
                if (a[i]>a[p.first]) p.second=max (p.second,a[i]);
                else{
                    p={i,0};
                }
                st.pop ();
                st.push (p);
            }
        }
    }

    return st.size();
}

• Subtask 1: 0 / 4
• Subtask 2: 11 / 11
• Subtask 3: 12 / 12
• Subtask 4: 0 / 14
• Subtask 5: 0 / 17
• Subtask 6: 0 / 19
• Subtask 7: 0 / 23