oj.uz

Submission #1013347

# Submission time Handle Problem Language Result Execution time Memory
1013347 2024-07-03T12:31:15 Z AverageAmogusEnjoyer Secret (JOI14_secret) C++17
100 / 100
 318 ms 4436 KB 
#include <bits/stdc++.h>
#include "secret.h"
using namespace std;
using ll = long long;
template<class T> bool cmin(T &i, T j) { return i > j ? i=j,true:false; }
template<class T> bool cmax(T &i, T j) { return i < j ? i=j,true:false; }

mt19937 mrand(chrono::steady_clock::now().time_since_epoch().count());

int rng() {
    return abs((int)mrand());
}

// Current challenge: finish CSES problemset!!

constexpr int nax = 1000, lg = 10;

int res[lg][nax];

int mask[nax];

int a[nax];

void build(int l,int r,int pw) {
    if (l == r) {
        return;
    }
    int m = (l+r)/2;
    res[pw][m] = a[m];
    for (int i=m-1;i>=l;i--) { res[pw][i] = Secret(a[i],res[pw][i+1]); }
    res[pw][m+1] = a[m+1];
    for (int i=m+2;i<=r;i++) { res[pw][i] = Secret(res[pw][i-1],a[i]); } 
    for (int i=m+1;i<=r;i++) { mask[i] ^= 1 << pw; }
    build(l,m,pw+1);
    build(m+1,r,pw+1);
}

void Init(int n,int _a[]) {
    for (int i=0;i<n;i++) {
        a[i] = _a[i];
    }
    build(0,n-1,0);
}

int Query(int l,int r) {
    if (l == r) { return a[l]; }
    int bits = __builtin_ctz(mask[l] ^ mask[r]);
    return Secret(res[bits][l],res[bits][r]);
}

Subtask #1
100.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 79 ms 2648 KB Output is correct - number of calls to Secret by Init = 3578, maximum number of calls to Secret by Query = 1
2 Correct 93 ms 2648 KB Output is correct - number of calls to Secret by Init = 3586, maximum number of calls to Secret by Query = 1
3 Correct 77 ms 2824 KB Output is correct - number of calls to Secret by Init = 3595, maximum number of calls to Secret by Query = 1
4 Correct 297 ms 4436 KB Output is correct - number of calls to Secret by Init = 7969, maximum number of calls to Secret by Query = 1
5 Correct 318 ms 4360 KB Output is correct - number of calls to Secret by Init = 7978, maximum number of calls to Secret by Query = 1
6 Correct 306 ms 4432 KB Output is correct - number of calls to Secret by Init = 7978, maximum number of calls to Secret by Query = 1
7 Correct 309 ms 4352 KB Output is correct - number of calls to Secret by Init = 7978, maximum number of calls to Secret by Query = 1
8 Correct 286 ms 4436 KB Output is correct - number of calls to Secret by Init = 7978, maximum number of calls to Secret by Query = 1
9 Correct 292 ms 4336 KB Output is correct - number of calls to Secret by Init = 7978, maximum number of calls to Secret by Query = 1
10 Correct 307 ms 4352 KB Output is correct - number of calls to Secret by Init = 7978, maximum number of calls to Secret by Query = 1