Submission #1252181

#	Time	Username	Problem	Language	Result	Execution time	Memory
1252181		bzzzzzzzzzz	Triple Peaks (IOI25_triples)	C++20	0 / 100	2092 ms	1860 KiB

triples

#include <bits/stdc++.h>
#include "triples.h"
using namespace std;
using ll = long long;

 std::vector<int> construct_range(int M, int K) {
     return {1};
 }

long long count_triples(vector<int> H) {
    int n = (int)H.size();
    ll ans = 0;
    for (int i = 0; i < n; i++) {
        for (int k = i + 2; k < n; k++) {
            int x = k - i;
            if (x == H[i]) {
                if (H[k] < x) {
                    if (H[i + H[k]] == x - (i + H[k])) {
                        ans++;
                    }
                    if (i + H[k] + H[k] != k && H[k - H[k]] == (k - H[k]) - x) {
                        ans++;
                    }
                }
            } else if (x == H[k]) {
                if (H[i] < x) {
                    if (H[i + H[i]] == x - (i + H[i])) {
                        ans++;
                    }
                    if (i + H[i] + H[i] != k && H[k - H[i]] == (k - H[i]) - x) {
                        ans++;
                    }
                }
            } else {
                if (H[i] + H[k] == x) {
                    if (H[i + H[i]] == x) {
                        ans++;
                    }
                    if (i + H[i] + H[i] != k && H[i + H[k]] == x) {
                        ans++;
                    }
                }
            }
        }
    }
    return ans;
}

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