JOI 2014 - Secret

Author: Andi Qu

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#include "secret.h"


int prefix[1000][1000], n;


void populate(int L, int R, int A[]) {
	int mid = (L + R) / 2;
	prefix[mid][mid] = A[mid];
	prefix[mid + 1][mid + 1] = A[mid + 1];


	for (int i = mid + 2; i <= R; i++)

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