oj.uz

Submission #593260

# Submission time Handle Problem Language Result Execution time Memory
593260 2022-07-10T17:00:42 Z Do_you_copy Secret (JOI14_secret) C++17
100 / 100
 438 ms 8268 KB 
#include <bits/stdc++.h>
#include "secret.h"
#define taskname "test"
#define fi first
#define se second
#define pb push_back
#define faster ios_base::sync_with_stdio(0); cin.tie(0);
using namespace std;
using ll = long long;
using pii = pair <int, int>;
using pil = pair <int, ll>;
using pli = pair <ll, int>;
using pll = pair <ll, ll>;
using ull = unsigned ll;
mt19937 Rand(chrono::steady_clock::now().time_since_epoch().count());

ll min(const ll &a, const ll &b){
    return (a < b) ? a : b;
}

ll max(const ll &a, const ll &b){
    return (a > b) ? a : b;
}

//const ll Mod = 1000000009;
//const ll Mod2 = 999999999989;
//only use when required
const int maxN = 1e3 + 1;

int n;
int cal[maxN][maxN];
int aa[maxN];
int cnt = 0;

void prepare(int l = 0, int r = n - 1){
    if (l > r) return;
    int mid = (l + r) / 2;
    cal[mid][mid] = aa[mid];
    cal[mid + 1][mid + 1] = aa[mid + 1];
    if (l + 1 >= r) return;
    for (int i = mid - 1; i >= l; --i){
        cal[mid][i] = Secret(aa[i], cal[mid][i + 1]);
    }
    for (int i = mid + 2; i <= r; ++i){
        cal[mid + 1][i] = Secret(cal[mid + 1][i - 1], aa[i]);
    }
    prepare(l, mid - 1);
    prepare(mid + 2, r);
}

int Query(int a, int b){
    int l = 0, r = n - 1;
    while (l < r){
        int mid = (l + r) / 2;
        if (a <= mid && mid + 1 <= b) return Secret(cal[mid][a], cal[mid + 1][b]);
        if (mid == b) return cal[b][a];
        if (mid + 1 == a) return cal[a][b];
        if (b < mid) r = mid - 1;
        if (a > mid + 1) l = mid + 2;
    }
    return cal[l][l];
}

void Init(int N, int A[]){
    n = N;
    for (int i = 0; i < n; ++i) aa[i] = A[i];
    prepare();
    //really? a star b != b star a?
}

/*
int main(){
    if (fopen(taskname".inp", "r")){
        freopen(taskname".inp", "r", stdin);
        //freopen(taskname".out", "w", stdout);
    }
    faster;
    ll tt = 1;
    //cin >> tt;
    while (tt--){
        Init();
    }
}*/

Subtask #1
100.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 125 ms 4604 KB Output is correct - number of calls to Secret by Init = 3084, maximum number of calls to Secret by Query = 1
2 Correct 122 ms 4360 KB Output is correct - number of calls to Secret by Init = 3092, maximum number of calls to Secret by Query = 1
3 Correct 119 ms 4384 KB Output is correct - number of calls to Secret by Init = 3100, maximum number of calls to Secret by Query = 1
4 Correct 438 ms 8268 KB Output is correct - number of calls to Secret by Init = 6988, maximum number of calls to Secret by Query = 1
5 Correct 433 ms 8152 KB Output is correct - number of calls to Secret by Init = 6996, maximum number of calls to Secret by Query = 1
6 Correct 434 ms 8236 KB Output is correct - number of calls to Secret by Init = 6996, maximum number of calls to Secret by Query = 1
7 Correct 430 ms 8144 KB Output is correct - number of calls to Secret by Init = 6996, maximum number of calls to Secret by Query = 1
8 Correct 428 ms 8184 KB Output is correct - number of calls to Secret by Init = 6996, maximum number of calls to Secret by Query = 1
9 Correct 422 ms 8180 KB Output is correct - number of calls to Secret by Init = 6996, maximum number of calls to Secret by Query = 1
10 Correct 426 ms 8140 KB Output is correct - number of calls to Secret by Init = 6996, maximum number of calls to Secret by Query = 1