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Submission #217027

# Submission time Handle Problem Language Result Execution time Memory
217027 2020-03-28T18:08:45 Z sevlll Strange Device (APIO19_strange_device) C++17
35 / 100
 965 ms 82668 KB 
#include <iostream>
#include <cstdio>
#include <cstdlib>
#include <algorithm>
#include <cmath>
#include <vector>
#include <set>
#include <map>
#include <unordered_set>
#include <unordered_map>
#include <queue>
#include <ctime>
#include <cassert>
#include <complex>
#include <string>
#include <cstring>
#include <chrono>
#include <random>
#include <queue>
#include <bitset>

#define pb push_back
#define int long long
#define str string
using namespace std;
const int M = 1e9 + 7;

signed main() {
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    cout.tie(nullptr);
    int n, a, b;
    cin >> n >> a >> b;
    vector<pair<int, int>> pr(n);
    for (int i = 0; i < n; i++) cin >> pr[i].first >> pr[i].second;
    int g = gcd(a, b + 1);
    a /= g;
    __int128_t num = a * b;
    if (n == 1) {
        int l = pr[0].first, r = pr[0].second;
        if (r - l >= num - 1) {
            cout << (int) num;
        } else {
            if (l == r) {
                cout << 1;
            } else {
                l %= num;
                r %= num;
                if (l < r) {
                    cout << r - l + 1;
                } else {
                    cout << (r + 1) + (int) num - l;
                }
            }
        }
        return 0;
    }
    vector<pair<__int128_t, int>> ev;
    for (auto p : pr) {
        int l = p.first, r = p.second;
        if (r - l >= num - 1) {
            cout << (int) num;
            return 0;
        }
        l %= num;
        r %= num;
        if (r < l) {
            ev.pb({l, 1});
            ev.pb({num, -1});
            ev.pb({0, 1});
            ev.pb({r + 1, -1});
        } else {
            ev.pb({l, 1});
            ev.pb({r + 1, -1});
        }
    }
    sort(ev.begin(), ev.end());
    int bal = 0;
    __int128_t last = 0;
    int ans = 0;
    for (auto p : ev) {
        __int128_t x = p.first;
        int type = p.second;
        if (bal) {
            ans += (x - last);
        }
        last = x;
        bal += type;
    }
    cout << ans;
}

Subtask #1
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 12 ms 1916 KB Output is correct
3 Correct 12 ms 1916 KB Output is correct
4 Correct 6 ms 384 KB Output is correct
5 Correct 5 ms 384 KB Output is correct
6 Correct 5 ms 384 KB Output is correct
7 Correct 5 ms 384 KB Output is correct
8 Correct 5 ms 384 KB Output is correct
9 Correct 5 ms 384 KB Output is correct
10 Correct 5 ms 384 KB Output is correct
11 Correct 5 ms 384 KB Output is correct
12 Correct 5 ms 384 KB Output is correct
13 Correct 4 ms 384 KB Output is correct
14 Correct 4 ms 384 KB Output is correct
15 Correct 5 ms 384 KB Output is correct
16 Correct 11 ms 1916 KB Output is correct
17 Correct 90 ms 11368 KB Output is correct
18 Incorrect 4 ms 384 KB Output isn't correct

Subtask #2
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 384 KB Output is correct
2 Correct 5 ms 384 KB Output is correct
3 Correct 5 ms 384 KB Output is correct
4 Correct 5 ms 384 KB Output is correct
5 Incorrect 4 ms 384 KB Output isn't correct

Subtask #3
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 5 ms 512 KB Output is correct
3 Correct 5 ms 512 KB Output is correct
4 Correct 5 ms 512 KB Output is correct
5 Correct 510 ms 82288 KB Output is correct

Subtask #4
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 384 KB Output is correct
2 Correct 737 ms 82668 KB Output is correct
3 Correct 779 ms 82592 KB Output is correct
4 Correct 752 ms 82592 KB Output is correct

Subtask #5
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 384 KB Output is correct
2 Correct 737 ms 82668 KB Output is correct
3 Correct 779 ms 82592 KB Output is correct
4 Correct 752 ms 82592 KB Output is correct
5 Correct 4 ms 384 KB Output is correct
6 Correct 762 ms 82624 KB Output is correct
7 Correct 711 ms 82584 KB Output is correct
8 Correct 733 ms 82624 KB Output is correct
9 Correct 931 ms 82524 KB Output is correct

Subtask #6
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 384 KB Output is correct
2 Correct 737 ms 82668 KB Output is correct
3 Correct 779 ms 82592 KB Output is correct
4 Correct 752 ms 82592 KB Output is correct
5 Correct 5 ms 384 KB Output is correct
6 Correct 71 ms 10984 KB Output is correct
7 Correct 76 ms 10984 KB Output is correct
8 Correct 77 ms 10984 KB Output is correct
9 Correct 77 ms 10984 KB Output is correct
10 Correct 76 ms 10984 KB Output is correct
11 Correct 76 ms 10984 KB Output is correct
12 Correct 70 ms 10984 KB Output is correct
13 Correct 83 ms 10968 KB Output is correct
14 Correct 72 ms 10984 KB Output is correct
15 Correct 89 ms 10984 KB Output is correct
16 Correct 79 ms 10984 KB Output is correct
17 Correct 75 ms 10984 KB Output is correct
18 Correct 762 ms 82612 KB Output is correct
19 Correct 717 ms 82624 KB Output is correct
20 Correct 925 ms 82564 KB Output is correct
21 Correct 86 ms 10984 KB Output is correct
22 Correct 73 ms 10988 KB Output is correct
23 Correct 212 ms 39264 KB Output is correct

Subtask #7
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 81 ms 10984 KB Output is correct
3 Correct 84 ms 10984 KB Output is correct
4 Correct 965 ms 82592 KB Output is correct
5 Correct 84 ms 10856 KB Output is correct
6 Correct 83 ms 10856 KB Output is correct
7 Correct 80 ms 10856 KB Output is correct
8 Correct 90 ms 10984 KB Output is correct
9 Correct 77 ms 10856 KB Output is correct
10 Correct 91 ms 10856 KB Output is correct
11 Correct 80 ms 10856 KB Output is correct
12 Correct 74 ms 10856 KB Output is correct
13 Correct 84 ms 10856 KB Output is correct
14 Correct 890 ms 82356 KB Output is correct
15 Correct 87 ms 10728 KB Output is correct
16 Correct 709 ms 82416 KB Output is correct
17 Correct 752 ms 82420 KB Output is correct
18 Incorrect 4 ms 384 KB Output isn't correct

Subtask #8
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 12 ms 1916 KB Output is correct
3 Correct 12 ms 1916 KB Output is correct
4 Correct 6 ms 384 KB Output is correct
5 Correct 5 ms 384 KB Output is correct
6 Correct 5 ms 384 KB Output is correct
7 Correct 5 ms 384 KB Output is correct
8 Correct 5 ms 384 KB Output is correct
9 Correct 5 ms 384 KB Output is correct
10 Correct 5 ms 384 KB Output is correct
11 Correct 5 ms 384 KB Output is correct
12 Correct 5 ms 384 KB Output is correct
13 Correct 4 ms 384 KB Output is correct
14 Correct 4 ms 384 KB Output is correct
15 Correct 5 ms 384 KB Output is correct
16 Correct 11 ms 1916 KB Output is correct
17 Correct 90 ms 11368 KB Output is correct
18 Incorrect 4 ms 384 KB Output isn't correct