제출 #1253823

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1253823		TIN	Triple Peaks (IOI25_triples)	C++20	0 / 100	12 ms	1860 KiB

triples

#include "triples.h"
#include <algorithm>

long long count_triples(std::vector<int> H) {
	int N = (int) H.size();
	if (N <= 100) {
		long long ans = 0;
		int A[3], B[3];
		for (int i = 0; i < N; i++) {
			A[0] = H[i];
			for (int j = i + 1; j < N; j++) {
				A[1] = H[j];
				B[0] = j - i;
				for (int k = j + 1; k < N; k++) {
					B[1] = k - j, B[2] = k - i;
					std::sort(A, A + 3);
					std::sort(B, B + 3);
					bool ok = true;
					for (int i = 0; i < 3; i++) if (A[i] != B[i]) ok = false;
					if (ok) ++ans;
				}
			}
		}
		return ans;
	}
	return 0LL;
}

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

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