Submission #70237

#	Time	Username	Problem	Language	Result	Execution time	Memory
70237		MladenP	Secret (JOI14_secret)	C++17	100 / 100	638 ms	8636 KiB

secret

#include "secret.h"
#define mid (l+r)/2
int n,i,a[1010],d[1010][1010];
void init(int l,int r){if(l>=r)return;for(int i=mid+1;i<=r;i++)d[mid][i]=Secret(d[mid][i-1],a[i]);for(int i=mid-2;i>=l;i--)d[i][mid-1]=Secret(a[i],d[i+1][mid-1]);init(l,mid-1);init(mid+1, r);}
void Init(int N,int A[]){for(i=1,n=N;i<=n;i++)a[i]=A[i-1],d[i][i]=a[i];init(1,N);}
int query(int l, int r, int L, int R) {
	if(L < mid && mid <= R) return Secret(d[L][mid-1],d[mid][R]);
	if(L == mid) return d[mid][R];
	if(mid < L) return query(mid+1, r, L, R);
	return query(l, mid-1, L, R);
}
int Query(int L, int R) {
	L++;R++;if(L == R) return a[L];
	return query(1, n, L, R);
}

• Subtask 1: 100 / 100