Submission #656738

#	Time	Username	Problem	Language	Result	Execution time	Memory
656738		minhcool	Secret (JOI14_secret)	C++17	100 / 100	454 ms	4480 KiB

secret

#include<bits/stdc++.h>
#include "secret.h"
//#include "factories.h"
using namespace std;
 
#define ll long long
#define fi first
#define se second
#define pb push_back
 
typedef pair<int, int> ii;
typedef pair<ii, int> iii;
typedef pair<ii, ii> iiii;
 
const ll N = 1e3 + 5, oo = 1e18 + 7, mod = 1e9 + 7;
 
int n, a[N];
 
int arr[N][11];
 
int val[N][11];
 
vector<ii> segments[11];
 
/*
int Secret(int x, int y){
    return x + 2 * (y/2);
}*/
 
void Init(int N, int A[]){
    n = N;
    for(int i = 0; i < n; i++) a[i + 1] = A[i];
    segments[0].pb({1, n});
    for(int i = 1; i <= 10; i++){
        int temp = 0;
        for(auto it : segments[i - 1]){
            //cout << i - 1 << " " << it.fi << " " << it.se << "\n";
            temp++;
            for(int j = it.fi; j <= it.se; j++) arr[j][i - 1] = temp;
            if(it.fi == it.se) continue;
            int mid = (it.fi + it.se) >> 1;
            segments[i].pb({it.fi, mid});
            segments[i].pb({mid + 1, it.se});
            val[mid][i - 1] = a[mid];
            val[mid + 1][i - 1] = a[mid + 1];
            for(int j = mid - 1; j >= it.fi; j--){
                val[j][i - 1] = Secret(a[j], val[j + 1][i - 1]);
            }
            for(int j = mid + 2; j <= it.se; j++){
                val[j][i - 1] = Secret(val[j - 1][i - 1], a[j]);
            }
        }
    }
}
 
int Query(int l, int r){
    l++, r++;
    if(l == r) return a[l];
    for(int i = 10; i >= 0; i--){
        if(!arr[l][i] || !arr[r][i]) continue;
        if(arr[l][i] == arr[r][i]){
            //out << l << " " << r << " " << i << "\n";
            //cout << val[l][i] << " " << val[r][i] << "\n";
            return Secret(val[l][i], val[r][i]);
        }
    }
}
 
/*
void process(){
    int n, q, a[1005];
    cin >> n;
    for(int i = 0; i < n; i++) cin >> a[i];
        cin >> q;
    Init(n, a);
    while(q--){
        int l, r;
        cin >> l >> r;
        cout << Query(l, r) << "\n";
    }
}
 
signed main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0), cout.tie(0);
    process();
}*/

Compilation message (stderr)

secret.cpp: In function 'int Query(int, int)':
secret.cpp:67:1: warning: control reaches end of non-void function [-Wreturn-type]
   67 | }
      | ^

• Subtask 1: 100 / 100