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Submission #249729

# Submission time Handle Problem Language Result Execution time Memory
249729 2020-07-15T16:04:34 Z receed Palembang Bridges (APIO15_bridge) C++14
100 / 100
 92 ms 8420 KB 
#include <iostream>
#include <iomanip>
#include <cstdio>
#include <vector>
#include <algorithm>
#include <cmath>
#include <cstring>
#include <cassert>
#include <string>
#include <set>
#include <map>
#include <random>
#include <bitset>
#include <string>
#include <unordered_set>
#include <unordered_map>
#include <deque>
#include <queue>
#define rep(i, n) for (int i = 0; i < (n); i++)
#define all(x) (x).begin(), (x).end()
#define rall(x) (x).rbegin(), (x).rend()

using namespace std;
using ll = long long;
using ul = unsigned long long;
using ld = long double;

const int N = 200001;
ll s1[N], s2[N], d1[N], d2[N];

int main() {
    ios_base::sync_with_stdio(0); cin.tie(0);
    int k, n, l, r;
    ll ans = 0;
    cin >> k >> n;
    char c1, c2;
    vector<int> li;
    vector<pair<int, int>> a;
    rep(i, n) {
        cin >> c1 >> l >> c2 >> r;
        if (l > r)
            swap(l, r);
        ans += r - l;
        if (c1 == c2)
            continue;
        ans++;
        li.push_back(l);
        li.push_back(r);
        a.push_back({l, r});
    }
    n = a.size();
    sort(all(li));
    li.resize(unique(all(li)) - li.begin());
    sort(all(a), [](auto &p1, auto &p2) {return p1.first + p1.second < p2.first + p2.second;});
    ll ca = 0, pos = 0, ck = 0;
    rep(i, n) {
        a[i].first = lower_bound(all(li), a[i].first) - li.begin();
        a[i].second = lower_bound(all(li), a[i].second) - li.begin();
        if (pos < a[i].first) {
            ca += li[a[i].first] - li[pos];
            ck--;
        }
        else if (a[i].second <= pos) {
            ca += li[pos] - li[a[i].second];
            ck++;
        }
        d1[a[i].first]++;
        d1[a[i].second]++;
        while (ck < 0) {
            ca += ck * (li[pos + 1] - li[pos]);
            pos++;
            ck += d1[pos];
        }
        s1[i + 1] = ca;
    }
    ll mn = s1[n];
    pos = li.size() - 1;
    ck = ca = 0;
    for (int i = n - 1; i >= 0; i--) {
        if (pos <= a[i].first) {
            ca += li[a[i].first] - li[pos];
            ck++;
        }
        else if (a[i].second < pos) {
            ca += li[pos] - li[a[i].second];
            ck--;
        }
        d2[a[i].first]++;
        d2[a[i].second]++;
        while (ck < 0) {
            ca += ck * (li[pos] - li[pos - 1]);
            pos--;
            ck += d2[pos];
        }
        if (k > 1)
            mn = min(mn, s1[i] + ca);
    }
    cout << ans + mn * 2;
}

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 384 KB Output is correct
2 Correct 0 ms 384 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Correct 1 ms 512 KB Output is correct
6 Correct 1 ms 384 KB Output is correct
7 Correct 1 ms 384 KB Output is correct
8 Correct 1 ms 512 KB Output is correct
9 Correct 1 ms 384 KB Output is correct
10 Correct 1 ms 384 KB Output is correct
11 Correct 1 ms 384 KB Output is correct

Subtask #2
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 384 KB Output is correct
2 Correct 0 ms 384 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Correct 1 ms 384 KB Output is correct
7 Correct 1 ms 384 KB Output is correct
8 Correct 1 ms 384 KB Output is correct
9 Correct 1 ms 384 KB Output is correct
10 Correct 1 ms 384 KB Output is correct
11 Correct 1 ms 384 KB Output is correct
12 Correct 27 ms 3692 KB Output is correct
13 Correct 88 ms 8420 KB Output is correct
14 Correct 57 ms 4068 KB Output is correct
15 Correct 50 ms 5100 KB Output is correct
16 Correct 37 ms 4580 KB Output is correct
17 Correct 52 ms 8420 KB Output is correct
18 Correct 57 ms 8036 KB Output is correct
19 Correct 71 ms 8164 KB Output is correct
20 Correct 39 ms 4836 KB Output is correct
21 Correct 64 ms 8164 KB Output is correct

Subtask #3
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 384 KB Output is correct
2 Correct 0 ms 384 KB Output is correct
3 Correct 0 ms 384 KB Output is correct
4 Correct 0 ms 384 KB Output is correct
5 Correct 0 ms 384 KB Output is correct
6 Correct 0 ms 384 KB Output is correct
7 Correct 0 ms 384 KB Output is correct
8 Correct 0 ms 384 KB Output is correct
9 Correct 0 ms 384 KB Output is correct
10 Correct 0 ms 384 KB Output is correct
11 Correct 1 ms 384 KB Output is correct
12 Correct 1 ms 384 KB Output is correct

Subtask #4
32.0 / 32.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 384 KB Output is correct
2 Correct 0 ms 384 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Correct 0 ms 384 KB Output is correct
7 Correct 1 ms 384 KB Output is correct
8 Correct 1 ms 384 KB Output is correct
9 Correct 1 ms 384 KB Output is correct
10 Correct 1 ms 384 KB Output is correct
11 Correct 0 ms 384 KB Output is correct
12 Correct 1 ms 384 KB Output is correct
13 Correct 1 ms 384 KB Output is correct
14 Correct 1 ms 384 KB Output is correct
15 Correct 1 ms 384 KB Output is correct
16 Correct 1 ms 384 KB Output is correct
17 Correct 1 ms 384 KB Output is correct
18 Correct 1 ms 384 KB Output is correct
19 Correct 1 ms 384 KB Output is correct
20 Correct 2 ms 384 KB Output is correct
21 Correct 1 ms 384 KB Output is correct
22 Correct 1 ms 384 KB Output is correct
23 Correct 1 ms 384 KB Output is correct
24 Correct 1 ms 384 KB Output is correct

Subtask #5
37.0 / 37.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 384 KB Output is correct
2 Correct 0 ms 384 KB Output is correct
3 Correct 0 ms 384 KB Output is correct
4 Correct 0 ms 384 KB Output is correct
5 Correct 0 ms 384 KB Output is correct
6 Correct 0 ms 384 KB Output is correct
7 Correct 0 ms 384 KB Output is correct
8 Correct 1 ms 384 KB Output is correct
9 Correct 0 ms 384 KB Output is correct
10 Correct 0 ms 384 KB Output is correct
11 Correct 1 ms 384 KB Output is correct
12 Correct 1 ms 384 KB Output is correct
13 Correct 1 ms 384 KB Output is correct
14 Correct 1 ms 384 KB Output is correct
15 Correct 1 ms 384 KB Output is correct
16 Correct 1 ms 384 KB Output is correct
17 Correct 1 ms 384 KB Output is correct
18 Correct 1 ms 384 KB Output is correct
19 Correct 1 ms 384 KB Output is correct
20 Correct 1 ms 384 KB Output is correct
21 Correct 1 ms 384 KB Output is correct
22 Correct 2 ms 384 KB Output is correct
23 Correct 1 ms 384 KB Output is correct
24 Correct 1 ms 384 KB Output is correct
25 Correct 26 ms 3692 KB Output is correct
26 Correct 40 ms 3936 KB Output is correct
27 Correct 84 ms 7476 KB Output is correct
28 Correct 92 ms 8416 KB Output is correct
29 Correct 89 ms 8416 KB Output is correct
30 Correct 47 ms 4712 KB Output is correct
31 Correct 34 ms 4580 KB Output is correct
32 Correct 55 ms 8416 KB Output is correct
33 Correct 57 ms 8160 KB Output is correct
34 Correct 73 ms 8288 KB Output is correct
35 Correct 41 ms 4836 KB Output is correct
36 Correct 64 ms 8192 KB Output is correct
37 Correct 23 ms 3684 KB Output is correct