oj.uz

Submission #967146

# Submission time Handle Problem Language Result Execution time Memory
967146 2024-04-21T10:35:05 Z Nhoksocqt1 Gap (APIO16_gap) C++17
38.649 / 100
 458 ms 3288 KB 
#ifndef Nhoksocqt1
    #include "gap.h"
#endif // Nhoksocqt1
#include<bits/stdc++.h>
using namespace std;

#define inf 0x3f3f3f3f
#define sz(x) int((x).size())
#define fi first
#define se second
typedef long long ll;
typedef pair<int, int> ii;

template<class X, class Y>
	inline bool maximize(X &x, const Y &y) {return (x < y ? x = y, 1 : 0);}
template<class X, class Y>
	inline bool minimize(X &x, const Y &y) {return (x > y ? x = y, 1 : 0);}

mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
int Random(int l, int r) {
    return uniform_int_distribution<int>(l, r)(rng);
}

const int MAXN = 100005;

ll a[MAXN];
int nArr;

#ifdef Nhoksocqt1

ll _A[MAXN], M;

void MinMax(ll s, ll t, ll *a, ll *b) {
    int l(1), r(nArr), optL(nArr + 1), optR(-1);
    while(l <= r) {
        int mid = (l + r) >> 1;
        if(_A[mid] >= s) {
            optL = mid;
            r = mid - 1;
        } else {
            l = mid + 1;
        }
    }

    l = 1, r = nArr;
    while(l <= r) {
        int mid = (l + r) >> 1;
        if(_A[mid] <= t) {
            optR = mid;
            l = mid + 1;
        } else {
            r = mid - 1;
        }
    }

    M += optR - optL + 2;
    if(optL > optR) {
        *a = *b = -1;
    } else {
        *a = _A[optL], *b = _A[optR];
    }
}

#endif // Nhoksocqt1

ll findGap(int T, int N) {
    nArr = N;
    MinMax(0, ll(1e18), &a[1], &a[nArr]);

    if(T == 1) {
        for (int i = 2; i <= (nArr + 1) / 2; ++i)
            MinMax(a[i - 1] + 1, a[nArr - i + 2] - 1, &a[i], &a[nArr - i + 1]);

        ll res(0);
        for (int i = 1; i < nArr; ++i)
            res = max(res, a[i + 1] - a[i]);

        return res;
    }

    ll answer = 1, lst = a[1];
    bool check = 1;
    while(check) {
        check = 0;
        ll pos(lst);
        for (int i = 0; i < 60; ++i) {
            ll s, t;
            MinMax(pos + 1, pos + (1LL << i), &s, &t);
            if(s != -1) {
                answer = max(answer, s - lst);
                lst = t;
                check = 1;
                break;
            }
        }
    }

    return answer;
}

#ifdef Nhoksocqt1

int main() {
    ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);

    #define TASK "GAP"
    if(fopen(TASK".inp", "r")) {
        freopen(TASK".inp", "r", stdin);
        freopen(TASK".out", "w", stdout);
    }

    int T, N;
    cin >> T >> N;
    for (int i = 1; i <= N; ++i) {
        cin >> _A[i];
        //_A[i] = _A[i - 1] + Random(1, 1e9); cout << _A[i] << " \n"[i == N];
    }

    M = 0;
    cout << "ANSWER: " << findGap(T, N) << '\n';
    cout << "COST ASK: " << M << '\n';
    return 0;
}

#endif // Nhoksocqt1

Subtask #1
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2392 KB Output is correct
2 Correct 1 ms 2392 KB Output is correct
3 Correct 1 ms 2392 KB Output is correct
4 Correct 0 ms 2392 KB Output is correct
5 Correct 1 ms 2392 KB Output is correct
6 Correct 1 ms 2392 KB Output is correct
7 Correct 1 ms 2392 KB Output is correct
8 Correct 1 ms 2392 KB Output is correct
9 Correct 1 ms 2392 KB Output is correct
10 Correct 1 ms 2392 KB Output is correct
11 Correct 1 ms 2392 KB Output is correct
12 Correct 1 ms 2392 KB Output is correct
13 Correct 1 ms 2392 KB Output is correct
14 Correct 1 ms 2392 KB Output is correct
15 Correct 1 ms 2392 KB Output is correct
16 Correct 10 ms 2728 KB Output is correct
17 Correct 8 ms 2592 KB Output is correct
18 Correct 7 ms 2592 KB Output is correct
19 Correct 7 ms 2588 KB Output is correct
20 Correct 6 ms 2572 KB Output is correct
21 Correct 28 ms 2852 KB Output is correct
22 Correct 28 ms 2876 KB Output is correct
23 Correct 28 ms 2880 KB Output is correct
24 Correct 30 ms 3288 KB Output is correct
25 Correct 26 ms 2868 KB Output is correct
26 Correct 28 ms 2880 KB Output is correct
27 Correct 32 ms 2860 KB Output is correct
28 Correct 28 ms 2876 KB Output is correct
29 Correct 28 ms 2856 KB Output is correct
30 Correct 23 ms 2944 KB Output is correct
31 Correct 1 ms 2392 KB Output is correct
32 Correct 1 ms 2392 KB Output is correct

Subtask #2
8.6489554192 / 70.0

# Verdict Execution time Memory Grader output
1 Partially correct 1 ms 2392 KB Partially correct
2 Partially correct 1 ms 2392 KB Partially correct
3 Partially correct 1 ms 2392 KB Partially correct
4 Partially correct 1 ms 2392 KB Partially correct
5 Partially correct 1 ms 2392 KB Partially correct
6 Partially correct 1 ms 2392 KB Partially correct
7 Partially correct 1 ms 2392 KB Partially correct
8 Partially correct 1 ms 2392 KB Partially correct
9 Partially correct 1 ms 2392 KB Partially correct
10 Partially correct 1 ms 2392 KB Partially correct
11 Partially correct 5 ms 2392 KB Partially correct
12 Partially correct 5 ms 2392 KB Partially correct
13 Partially correct 6 ms 2516 KB Partially correct
14 Partially correct 5 ms 2392 KB Partially correct
15 Partially correct 4 ms 2392 KB Partially correct
16 Partially correct 96 ms 2588 KB Partially correct
17 Partially correct 94 ms 2592 KB Partially correct
18 Partially correct 98 ms 2588 KB Partially correct
19 Partially correct 95 ms 2592 KB Partially correct
20 Correct 4 ms 2576 KB Output is correct
21 Partially correct 418 ms 2884 KB Partially correct
22 Partially correct 419 ms 2880 KB Partially correct
23 Partially correct 420 ms 2872 KB Partially correct
24 Partially correct 416 ms 2880 KB Partially correct
25 Partially correct 341 ms 3116 KB Partially correct
26 Partially correct 427 ms 2876 KB Partially correct
27 Partially correct 458 ms 2888 KB Partially correct
28 Partially correct 424 ms 2868 KB Partially correct
29 Partially correct 436 ms 2872 KB Partially correct
30 Correct 17 ms 2872 KB Output is correct
31 Partially correct 1 ms 2392 KB Partially correct
32 Partially correct 1 ms 2392 KB Partially correct