oj.uz

Submission #367018

# Submission time Handle Problem Language Result Execution time Memory
367018 2021-02-16T03:54:22 Z fishy15 Arranging Tickets (JOI17_arranging_tickets) C++14
100 / 100
 3659 ms 14540 KB 
#include <iostream>
#include <iomanip>
#include <fstream>
#include <vector>
#include <array>
#include <algorithm>
#include <utility>
#include <map>
#include <queue>
#include <set>
#include <cmath>
#include <cstdio>
#include <cstring>

#define ll long long
#define ld long double
#define eps 1e-8
#define MOD 1000000007

#define INF 0x3f3f3f3f
#define INFLL 0x3f3f3f3f3f3f3f3f

// change if necessary
#define MAXN 200010

using namespace std;

int n, m;
vector<array<int, 3>> range[MAXN];
ll init[MAXN];
int min_check, max_check;

struct cmp {
    bool operator()(const array<int, 3> &a, const array<int, 3> &b) const {
        if (a[1] == b[1]) {
            if (a[0] == b[0]) {
                return a[2] < b[2];
            }
            return a[0] > b[0];
        }
        return a[1] < b[1];
    }
};

struct bit {
    ll vals[MAXN];
    void reset() {
        for (int i = 0; i < n + 10; i++) {
            vals[i] = 0;
        }
        for (int i = 0; i < n; i++) {
            ll x = init[i];
            if (i) x -= init[i - 1];
            upd(i, x);
        }
    }
    void upd(int x, ll v) {
        x++;
        while (x < n + 10) {
            vals[x] += v;
            x += x & -x;
        }
    }
    void upd(int l, int r, ll v) {
        upd(l, v);
        upd(r, -v);
    }
    ll qry(int x) {
        x++;
        ll res = 0;
        while (x) {
            res += vals[x];
            x -= x & -x;
        }
        return res;
    }
} b;

ll check(ll m, ll n, ll t) {
    b.reset();
    priority_queue<array<int, 3>, vector<array<int, 3>>, cmp> pq;
    for (int i = 0; i <= t; i++) {
        ll need_rem = max((b.qry(i) + n - m + 1) / 2, 0LL);
        n -= need_rem;
        for (auto &arr : range[i]) {
            if (arr[1] > t) {
                pq.push(arr);
            }
        }
        while (need_rem) {
            if (pq.empty()) {
                return false;
            }
            auto t = pq.top(); pq.pop();
            ll to_rem = min<ll>(t[2], need_rem);
            b.upd(0, t[0], to_rem);
            b.upd(t[0], t[1], -to_rem);
            b.upd(t[1], ::n, to_rem);
            t[2] -= to_rem;
            need_rem -= to_rem;
            if (t[2]) pq.push(t);
        }
    }

    for (int i = 0; i < ::n; i++) {
        if (b.qry(i) > m) {
            return false;
        }
    }

    return true;
}

ll check(ll m) {
    ll a = init[min_check];
    return check(m, a - m, min_check) || check(m, a - m + 1, min_check)
        || check(m, a - m, max_check) || check(m, a - m + 1, max_check);
}

int main() {
    cin.tie(0)->sync_with_stdio(0);

    cin >> n >> m;
    for (int i = 0; i < m; i++) {
        int a, b, c; cin >> a >> b >> c;
        a--; b--;
        if (a > b) swap(a, b);
        init[a] += c;
        init[b] -= c;
        range[a].push_back({a, b, c});
    }

    for (int i = 1; i < n; i++) {
        init[i] += init[i - 1];
    }

    for (int i = 0; i < n; i++) {
        if (init[i] > init[min_check]) {
            min_check = i;
            max_check = i;
        } else if (init[i] == init[min_check]) {
            max_check = i;
        }
    }

    ll l = 0;
    ll r = init[min_check];
    ll ans = init[min_check];

    while (l <= r) {
        ll m = (l + r) / 2;
        if (check(m)) {
            ans = m;
            r = m - 1;
        } else {
            l = m + 1;
        }
    }

    cout << ans << '\n';

    return 0;
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 5100 KB Output is correct
2 Correct 4 ms 5100 KB Output is correct
3 Correct 4 ms 5120 KB Output is correct
4 Correct 4 ms 5100 KB Output is correct
5 Correct 4 ms 5100 KB Output is correct
6 Correct 4 ms 5100 KB Output is correct
7 Correct 4 ms 5100 KB Output is correct
8 Correct 4 ms 5100 KB Output is correct
9 Correct 4 ms 5100 KB Output is correct
10 Correct 4 ms 5100 KB Output is correct
11 Correct 3 ms 5100 KB Output is correct
12 Correct 4 ms 5100 KB Output is correct
13 Correct 4 ms 5100 KB Output is correct
14 Correct 4 ms 5100 KB Output is correct
15 Correct 3 ms 5100 KB Output is correct

Subtask #2
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 5100 KB Output is correct
2 Correct 4 ms 5100 KB Output is correct
3 Correct 4 ms 5120 KB Output is correct
4 Correct 4 ms 5100 KB Output is correct
5 Correct 4 ms 5100 KB Output is correct
6 Correct 4 ms 5100 KB Output is correct
7 Correct 4 ms 5100 KB Output is correct
8 Correct 4 ms 5100 KB Output is correct
9 Correct 4 ms 5100 KB Output is correct
10 Correct 4 ms 5100 KB Output is correct
11 Correct 3 ms 5100 KB Output is correct
12 Correct 4 ms 5100 KB Output is correct
13 Correct 4 ms 5100 KB Output is correct
14 Correct 4 ms 5100 KB Output is correct
15 Correct 3 ms 5100 KB Output is correct
16 Correct 4 ms 5100 KB Output is correct
17 Correct 4 ms 5100 KB Output is correct
18 Correct 5 ms 5100 KB Output is correct
19 Correct 4 ms 5100 KB Output is correct
20 Correct 4 ms 5100 KB Output is correct
21 Correct 4 ms 5100 KB Output is correct
22 Correct 4 ms 5100 KB Output is correct
23 Correct 4 ms 5100 KB Output is correct
24 Correct 4 ms 5100 KB Output is correct
25 Correct 4 ms 5100 KB Output is correct
26 Correct 4 ms 5100 KB Output is correct
27 Correct 4 ms 5100 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 5100 KB Output is correct
2 Correct 4 ms 5100 KB Output is correct
3 Correct 4 ms 5120 KB Output is correct
4 Correct 4 ms 5100 KB Output is correct
5 Correct 4 ms 5100 KB Output is correct
6 Correct 4 ms 5100 KB Output is correct
7 Correct 4 ms 5100 KB Output is correct
8 Correct 4 ms 5100 KB Output is correct
9 Correct 4 ms 5100 KB Output is correct
10 Correct 4 ms 5100 KB Output is correct
11 Correct 3 ms 5100 KB Output is correct
12 Correct 4 ms 5100 KB Output is correct
13 Correct 4 ms 5100 KB Output is correct
14 Correct 4 ms 5100 KB Output is correct
15 Correct 3 ms 5100 KB Output is correct
16 Correct 4 ms 5100 KB Output is correct
17 Correct 4 ms 5100 KB Output is correct
18 Correct 5 ms 5100 KB Output is correct
19 Correct 4 ms 5100 KB Output is correct
20 Correct 4 ms 5100 KB Output is correct
21 Correct 4 ms 5100 KB Output is correct
22 Correct 4 ms 5100 KB Output is correct
23 Correct 4 ms 5100 KB Output is correct
24 Correct 4 ms 5100 KB Output is correct
25 Correct 4 ms 5100 KB Output is correct
26 Correct 4 ms 5100 KB Output is correct
27 Correct 4 ms 5100 KB Output is correct
28 Correct 8 ms 5228 KB Output is correct
29 Correct 8 ms 5228 KB Output is correct
30 Correct 10 ms 5228 KB Output is correct
31 Correct 8 ms 5228 KB Output is correct
32 Correct 11 ms 5228 KB Output is correct
33 Correct 9 ms 5228 KB Output is correct
34 Correct 7 ms 5228 KB Output is correct
35 Correct 11 ms 5228 KB Output is correct
36 Correct 9 ms 5248 KB Output is correct
37 Correct 8 ms 5228 KB Output is correct
38 Correct 6 ms 5228 KB Output is correct
39 Correct 6 ms 5228 KB Output is correct

Subtask #4
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 5100 KB Output is correct
2 Correct 4 ms 5100 KB Output is correct
3 Correct 4 ms 5120 KB Output is correct
4 Correct 4 ms 5100 KB Output is correct
5 Correct 4 ms 5100 KB Output is correct
6 Correct 4 ms 5100 KB Output is correct
7 Correct 4 ms 5100 KB Output is correct
8 Correct 4 ms 5100 KB Output is correct
9 Correct 4 ms 5100 KB Output is correct
10 Correct 4 ms 5100 KB Output is correct
11 Correct 3 ms 5100 KB Output is correct
12 Correct 4 ms 5100 KB Output is correct
13 Correct 4 ms 5100 KB Output is correct
14 Correct 4 ms 5100 KB Output is correct
15 Correct 3 ms 5100 KB Output is correct
16 Correct 4 ms 5100 KB Output is correct
17 Correct 4 ms 5100 KB Output is correct
18 Correct 5 ms 5100 KB Output is correct
19 Correct 4 ms 5100 KB Output is correct
20 Correct 4 ms 5100 KB Output is correct
21 Correct 4 ms 5100 KB Output is correct
22 Correct 4 ms 5100 KB Output is correct
23 Correct 4 ms 5100 KB Output is correct
24 Correct 4 ms 5100 KB Output is correct
25 Correct 4 ms 5100 KB Output is correct
26 Correct 4 ms 5100 KB Output is correct
27 Correct 4 ms 5100 KB Output is correct
28 Correct 8 ms 5228 KB Output is correct
29 Correct 8 ms 5228 KB Output is correct
30 Correct 10 ms 5228 KB Output is correct
31 Correct 8 ms 5228 KB Output is correct
32 Correct 11 ms 5228 KB Output is correct
33 Correct 9 ms 5228 KB Output is correct
34 Correct 7 ms 5228 KB Output is correct
35 Correct 11 ms 5228 KB Output is correct
36 Correct 9 ms 5248 KB Output is correct
37 Correct 8 ms 5228 KB Output is correct
38 Correct 6 ms 5228 KB Output is correct
39 Correct 6 ms 5228 KB Output is correct
40 Correct 422 ms 13328 KB Output is correct
41 Correct 463 ms 13432 KB Output is correct
42 Correct 412 ms 13284 KB Output is correct
43 Correct 738 ms 13432 KB Output is correct
44 Correct 417 ms 13340 KB Output is correct
45 Correct 860 ms 13276 KB Output is correct
46 Correct 453 ms 13080 KB Output is correct
47 Correct 330 ms 12776 KB Output is correct
48 Correct 343 ms 12736 KB Output is correct
49 Correct 184 ms 11212 KB Output is correct
50 Correct 156 ms 11116 KB Output is correct
51 Correct 180 ms 10904 KB Output is correct

Subtask #5
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 5100 KB Output is correct
2 Correct 4 ms 5100 KB Output is correct
3 Correct 4 ms 5120 KB Output is correct
4 Correct 4 ms 5100 KB Output is correct
5 Correct 4 ms 5100 KB Output is correct
6 Correct 4 ms 5100 KB Output is correct
7 Correct 4 ms 5100 KB Output is correct
8 Correct 4 ms 5100 KB Output is correct
9 Correct 4 ms 5100 KB Output is correct
10 Correct 4 ms 5100 KB Output is correct
11 Correct 3 ms 5100 KB Output is correct
12 Correct 4 ms 5100 KB Output is correct
13 Correct 4 ms 5100 KB Output is correct
14 Correct 4 ms 5100 KB Output is correct
15 Correct 3 ms 5100 KB Output is correct
16 Correct 4 ms 5100 KB Output is correct
17 Correct 4 ms 5100 KB Output is correct
18 Correct 5 ms 5100 KB Output is correct
19 Correct 4 ms 5100 KB Output is correct
20 Correct 4 ms 5100 KB Output is correct
21 Correct 4 ms 5100 KB Output is correct
22 Correct 4 ms 5100 KB Output is correct
23 Correct 4 ms 5100 KB Output is correct
24 Correct 4 ms 5100 KB Output is correct
25 Correct 4 ms 5100 KB Output is correct
26 Correct 4 ms 5100 KB Output is correct
27 Correct 4 ms 5100 KB Output is correct
28 Correct 8 ms 5228 KB Output is correct
29 Correct 8 ms 5228 KB Output is correct
30 Correct 10 ms 5228 KB Output is correct
31 Correct 8 ms 5228 KB Output is correct
32 Correct 11 ms 5228 KB Output is correct
33 Correct 9 ms 5228 KB Output is correct
34 Correct 7 ms 5228 KB Output is correct
35 Correct 11 ms 5228 KB Output is correct
36 Correct 9 ms 5248 KB Output is correct
37 Correct 8 ms 5228 KB Output is correct
38 Correct 6 ms 5228 KB Output is correct
39 Correct 6 ms 5228 KB Output is correct
40 Correct 422 ms 13328 KB Output is correct
41 Correct 463 ms 13432 KB Output is correct
42 Correct 412 ms 13284 KB Output is correct
43 Correct 738 ms 13432 KB Output is correct
44 Correct 417 ms 13340 KB Output is correct
45 Correct 860 ms 13276 KB Output is correct
46 Correct 453 ms 13080 KB Output is correct
47 Correct 330 ms 12776 KB Output is correct
48 Correct 343 ms 12736 KB Output is correct
49 Correct 184 ms 11212 KB Output is correct
50 Correct 156 ms 11116 KB Output is correct
51 Correct 180 ms 10904 KB Output is correct
52 Correct 1478 ms 14224 KB Output is correct
53 Correct 1684 ms 14312 KB Output is correct
54 Correct 3444 ms 14540 KB Output is correct
55 Correct 1434 ms 14100 KB Output is correct
56 Correct 2700 ms 14480 KB Output is correct
57 Correct 3659 ms 14096 KB Output is correct
58 Correct 1597 ms 13900 KB Output is correct
59 Correct 1394 ms 11896 KB Output is correct