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Submission #322569

# Submission time Handle Problem Language Result Execution time Memory
322569 2020-11-14T23:19:18 Z arbor Strange Device (APIO19_strange_device) C++14
65 / 100
 610 ms 17160 KB 
#include <bits/stdc++.h>
#define all(x) x.begin(), x.end()
using namespace std;
using ll = long long;
using pii = pair<int, int>;
const int MN = 1e5 + 5;
using ull = unsigned long long;

int main() {
    ios_base::sync_with_stdio(0), cin.tie(0);
    ull n, a, b; cin >> n >> a >> b;
    ull p = a / __gcd(a, b + 1) * b;
    vector<pair<ull, ull>> v;
    for (int i = 0; i < n; i++) {
        ull l, r; cin >> l >> r;
        l %= p, r %= p;
        if (l > r) v.emplace_back(0, r), v.emplace_back(l, p - 1);
        else v.emplace_back(l, r);
    }
    v.emplace_back(p, p);
    sort(all(v));
    ull ans = 0;
    for (int i = 0; i < v.size();) {
        int j = i;
        for (; v[i].second >= v[j].second && j < v.size(); j++);
        ans += v[i].second - v[i].first + 1;
        v[j].first = max(v[j].first, v[i].second + 1);
        i = j;
    }
    cout << ans - 1 << '\n';
    return 0;
}

Compilation message

strange_device.cpp: In function 'int main()':
strange_device.cpp:14:23: warning: comparison of integer expressions of different signedness: 'int' and 'ull' {aka 'long long unsigned int'} [-Wsign-compare]
   14 |     for (int i = 0; i < n; i++) {
      |                     ~~^~~
strange_device.cpp:23:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<long long unsigned int, long long unsigned int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   23 |     for (int i = 0; i < v.size();) {
      |                     ~~^~~~~~~~~~
strange_device.cpp:25:48: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<long long unsigned int, long long unsigned int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   25 |         for (; v[i].second >= v[j].second && j < v.size(); j++);
      |                                              ~~^~~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 6 ms 748 KB Output is correct
3 Correct 6 ms 748 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 0 ms 364 KB Output is correct
6 Correct 0 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 0 ms 364 KB Output is correct
10 Correct 0 ms 364 KB Output is correct
11 Correct 0 ms 364 KB Output is correct
12 Correct 0 ms 364 KB Output is correct
13 Correct 0 ms 364 KB Output is correct
14 Correct 0 ms 364 KB Output is correct
15 Correct 1 ms 364 KB Output is correct
16 Correct 6 ms 748 KB Output is correct
17 Correct 59 ms 2536 KB Output is correct
18 Correct 0 ms 364 KB Output is correct

Subtask #2
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 364 KB Output is correct
2 Incorrect 1 ms 384 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #3
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 414 ms 17016 KB Output is correct

Subtask #4
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 364 KB Output is correct
2 Correct 549 ms 16976 KB Output is correct
3 Correct 571 ms 16976 KB Output is correct
4 Correct 543 ms 17016 KB Output is correct

Subtask #5
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 364 KB Output is correct
2 Correct 549 ms 16976 KB Output is correct
3 Correct 571 ms 16976 KB Output is correct
4 Correct 543 ms 17016 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 530 ms 16848 KB Output is correct
7 Correct 566 ms 17000 KB Output is correct
8 Correct 541 ms 16848 KB Output is correct
9 Correct 579 ms 16848 KB Output is correct

Subtask #6
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 364 KB Output is correct
2 Correct 549 ms 16976 KB Output is correct
3 Correct 571 ms 16976 KB Output is correct
4 Correct 543 ms 17016 KB Output is correct
5 Correct 0 ms 364 KB Output is correct
6 Correct 53 ms 2536 KB Output is correct
7 Correct 55 ms 2536 KB Output is correct
8 Correct 53 ms 2536 KB Output is correct
9 Correct 52 ms 2536 KB Output is correct
10 Correct 52 ms 2536 KB Output is correct
11 Correct 55 ms 2536 KB Output is correct
12 Correct 53 ms 2536 KB Output is correct
13 Correct 56 ms 2536 KB Output is correct
14 Correct 53 ms 2536 KB Output is correct
15 Correct 58 ms 2536 KB Output is correct
16 Correct 57 ms 2536 KB Output is correct
17 Correct 52 ms 2536 KB Output is correct
18 Correct 554 ms 17020 KB Output is correct
19 Correct 549 ms 17008 KB Output is correct
20 Correct 583 ms 16848 KB Output is correct
21 Correct 57 ms 2536 KB Output is correct
22 Correct 50 ms 2536 KB Output is correct
23 Correct 169 ms 8668 KB Output is correct

Subtask #7
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 61 ms 2536 KB Output is correct
3 Correct 56 ms 2536 KB Output is correct
4 Correct 610 ms 16848 KB Output is correct
5 Correct 56 ms 2536 KB Output is correct
6 Correct 59 ms 2536 KB Output is correct
7 Correct 56 ms 2536 KB Output is correct
8 Correct 57 ms 2536 KB Output is correct
9 Correct 57 ms 2536 KB Output is correct
10 Correct 56 ms 2536 KB Output is correct
11 Correct 58 ms 2536 KB Output is correct
12 Correct 60 ms 2536 KB Output is correct
13 Correct 56 ms 2536 KB Output is correct
14 Correct 582 ms 16848 KB Output is correct
15 Correct 55 ms 2536 KB Output is correct
16 Correct 536 ms 17160 KB Output is correct
17 Correct 539 ms 17024 KB Output is correct
18 Correct 1 ms 364 KB Output is correct

Subtask #8
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 6 ms 748 KB Output is correct
3 Correct 6 ms 748 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 0 ms 364 KB Output is correct
6 Correct 0 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 0 ms 364 KB Output is correct
10 Correct 0 ms 364 KB Output is correct
11 Correct 0 ms 364 KB Output is correct
12 Correct 0 ms 364 KB Output is correct
13 Correct 0 ms 364 KB Output is correct
14 Correct 0 ms 364 KB Output is correct
15 Correct 1 ms 364 KB Output is correct
16 Correct 6 ms 748 KB Output is correct
17 Correct 59 ms 2536 KB Output is correct
18 Correct 0 ms 364 KB Output is correct
19 Correct 0 ms 364 KB Output is correct
20 Incorrect 1 ms 384 KB Output isn't correct
21 Halted 0 ms 0 KB -