Submission #735284

#	Time	Username	Problem	Language	Result	Execution time	Memory
735284		Wael	Secret (JOI14_secret)	C++14	0 / 100	457 ms	9804 KiB

secret

#include "secret.h"
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
//#define int long long
#define F first
#define S second
//#define endl '\n'
#define INT INT_MAX
int const M = 1e3 + 30 , N = 3e6 , lg = 25 , mod = 1e9 + 7;
int dx[] = {0 , 0 , -1 , 1 , 1 , 1 , -1 , -1};
int dy[] = {1 , -1 , 0 , 0 , 1 , -1 , 1 , -1};
int T , n , j , a[M] , Q , l , r , Size = 1024 , s[M];
long long ans[M][M];

/*
inline ll Secret(int x , int y) {
    //cout << x << " " << y << endl;
    int res;
    res = x + y;
    return res;
}
*/

void Go(int x = 1 , int lx = 1 , int rx = Size) {

    if(lx == rx) {
        ans[lx][rx] = s[lx];
        return;
    }
    int mid = (lx + rx) / 2;
    int a = mid , b = mid + 1;
    ans[b][b] = s[b];
    for(int i = b + 1 ; i <= rx ; ++i) ans[b][i] = Secret(ans[b][i - 1] , s[i]);

    ans[a][a] = s[a];
    for(int i = a - 1 ; i >= lx ; --i) ans[i][a] = Secret(ans[i + 1][a] , s[i]);
    Go(2 * x , lx , mid);
    Go(2 * x + 1 , mid + 1 , rx);

}

int Get(int l , int r , int x = 1 , int lx = 1 , int rx = Size) {

    int mid = (lx + rx) / 2;
    if((mid >= l && mid <= r)) return Secret(ans[l][mid] , ans[mid + 1][r]);
    if(l > mid) return Get(l , r , 2 * x + 1 , mid + 1 , rx);
    else return Get(l , r , 2 * x,  lx , mid);

}

void Init(int sz , int ar[]) {

    n = sz;
    for(int i = 1 ; i <= n ; ++i) s[i] = ar[i - 1];
    Go();

}

int Query(int l , int r) {
    ++l , ++r;
    if(l == r) return s[l];
    return Get(l , r);
}

• Subtask 1: 0 / 100