Submission #1250647

#	Time	Username	Problem	Language	Result	Execution time	Memory
1250647		Cebrayil09	Triple Peaks (IOI25_triples)	C++20	12.02 / 100	14 ms	1864 KiB

triples

#include "triples.h"
#include <bits/stdc++.h>

using namespace std;

#define ll long long

long long count_triples(vector<int> h) {
    ll cnt = 0;

    for(int i = 0;i < h.size();i++) {
        int j = -1, k = -1;
        if(h[i] <= i) {
            int jn = i - h[i];
            int kn = jn + h[jn];

            if(h[kn] == i - kn) {
                cnt++;

                j = jn;
                k = kn;
            }

            kn = i - h[jn];

            if(h[kn] == kn - jn) {
                if(j != jn || k != kn) {
                    cnt++;
                }
            }
        }

    }

    return cnt;
}

vector<int> construct_range(int M, int K) {
    return {1,2,3,3,4,4,1,2,3,3,4};
}

• Subtask 0: 0 / 0
• Subtask 1: 0 / 8
• Subtask 2: 0 / 6
• Subtask 3: 0 / 10
• Subtask 4: 11 / 11
• Subtask 5: 0 / 16
• Subtask 6: 0 / 19
• Subtask 7: 1 / 5
• Subtask 8: 0.015 / 5
• Subtask 9: 0.0006 / 5
• Subtask 10: 0 / 5
• Subtask 11: 0 / 5
• Subtask 12: 0 / 5