Submission #1249880

#	Time	Username	Problem	Language	Result	Execution time	Memory
1249880		Zicrus	Triple Peaks (IOI25_triples)	C++20	6 / 100	1196 ms	1988 KiB

triples

#include <bits/stdc++.h>
#include "triples.h"
using namespace std;
typedef long long ll;
typedef pair<ll, ll> pll;
#define all(v) v.begin(), v.end()
constexpr ll inf = 1ll << 62ll;
mt19937 mt(time(0));
ll _ = 0;

ll count_triples(vector<int> h) {
	ll n = h.size();
	ll cnt = 0;
	for (ll i = 0; i < n; i++) {
		for (ll j = i+1; j < n && j <= i + 10; j++) {
			for (ll k = j+1; k < n && k <= i + 10; k++) {
				multiset<ll> dists = {abs(i-j), abs(j-k), abs(k-i)};
				multiset<ll> heights = {h[i], h[j], h[k]};
				if (dists == heights) {
					cnt++;
				}
			}
		}
	}
	return cnt;
}

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

#ifdef TEST
#include "grader.cpp"
#endif

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• Subtask 2: 6 / 6
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