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Submission #217009

# Submission time Handle Problem Language Result Execution time Memory
217009 2020-03-28T17:41:17 Z sevlll Strange Device (APIO19_strange_device) C++14
65 / 100
 794 ms 49980 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;
    if (a >= (1e18+8800)/b) {
        int ans = 0;
        for (auto p : pr) {
            ans += p.second - p.first+1;
        }
        cout << ans;
        return 0;
    }
    int num = a * b;
    vector<pair<int, int>> ev;
    for (auto p : pr) {
        int l = p.first, r = p.second;
        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;
    int last = 0;
    int ans = 0;
    for (auto p : ev) {
        int x = p.first, type = p.second;
        if (bal) {
            ans += (x - last);
        }
        last = x;
        bal += type;
    }
    cout << ans;
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 384 KB Output is correct
2 Correct 11 ms 1656 KB Output is correct
3 Correct 11 ms 1536 KB Output is correct
4 Correct 5 ms 384 KB Output is correct
5 Correct 5 ms 384 KB Output is correct
6 Correct 4 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 4 ms 384 KB Output is correct
11 Correct 5 ms 384 KB Output is correct
12 Correct 4 ms 384 KB Output is correct
13 Correct 4 ms 384 KB Output is correct
14 Correct 5 ms 384 KB Output is correct
15 Correct 4 ms 384 KB Output is correct
16 Correct 11 ms 1536 KB Output is correct
17 Correct 76 ms 7660 KB Output is correct
18 Correct 4 ms 384 KB Output is correct

Subtask #2
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 384 KB Output is correct
2 Incorrect 5 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 4 ms 384 KB Output is correct
2 Correct 5 ms 384 KB Output is correct
3 Correct 5 ms 512 KB Output is correct
4 Correct 6 ms 512 KB Output is correct
5 Correct 452 ms 49752 KB Output is correct

Subtask #4
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 658 ms 49748 KB Output is correct
3 Correct 707 ms 49732 KB Output is correct
4 Correct 646 ms 49884 KB Output is correct

Subtask #5
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 658 ms 49748 KB Output is correct
3 Correct 707 ms 49732 KB Output is correct
4 Correct 646 ms 49884 KB Output is correct
5 Correct 4 ms 384 KB Output is correct
6 Correct 651 ms 49980 KB Output is correct
7 Correct 638 ms 49920 KB Output is correct
8 Correct 642 ms 49748 KB Output is correct
9 Correct 734 ms 49896 KB Output is correct

Subtask #6
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 658 ms 49748 KB Output is correct
3 Correct 707 ms 49732 KB Output is correct
4 Correct 646 ms 49884 KB Output is correct
5 Correct 5 ms 384 KB Output is correct
6 Correct 66 ms 6892 KB Output is correct
7 Correct 68 ms 6896 KB Output is correct
8 Correct 66 ms 6892 KB Output is correct
9 Correct 65 ms 6896 KB Output is correct
10 Correct 63 ms 7020 KB Output is correct
11 Correct 67 ms 6892 KB Output is correct
12 Correct 65 ms 6892 KB Output is correct
13 Correct 72 ms 6892 KB Output is correct
14 Correct 66 ms 6892 KB Output is correct
15 Correct 76 ms 6892 KB Output is correct
16 Correct 90 ms 6892 KB Output is correct
17 Correct 64 ms 6944 KB Output is correct
18 Correct 655 ms 49736 KB Output is correct
19 Correct 604 ms 49748 KB Output is correct
20 Correct 772 ms 49704 KB Output is correct
21 Correct 76 ms 6764 KB Output is correct
22 Correct 62 ms 6764 KB Output is correct
23 Correct 189 ms 22756 KB Output is correct

Subtask #7
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 70 ms 6764 KB Output is correct
3 Correct 70 ms 6764 KB Output is correct
4 Correct 794 ms 49620 KB Output is correct
5 Correct 73 ms 6636 KB Output is correct
6 Correct 76 ms 6764 KB Output is correct
7 Correct 80 ms 6720 KB Output is correct
8 Correct 74 ms 6636 KB Output is correct
9 Correct 71 ms 6644 KB Output is correct
10 Correct 73 ms 6636 KB Output is correct
11 Correct 72 ms 6636 KB Output is correct
12 Correct 73 ms 6692 KB Output is correct
13 Correct 75 ms 6636 KB Output is correct
14 Correct 730 ms 49360 KB Output is correct
15 Correct 73 ms 6380 KB Output is correct
16 Correct 616 ms 49248 KB Output is correct
17 Correct 634 ms 49368 KB Output is correct
18 Correct 5 ms 384 KB Output is correct

Subtask #8
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 384 KB Output is correct
2 Correct 11 ms 1656 KB Output is correct
3 Correct 11 ms 1536 KB Output is correct
4 Correct 5 ms 384 KB Output is correct
5 Correct 5 ms 384 KB Output is correct
6 Correct 4 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 4 ms 384 KB Output is correct
11 Correct 5 ms 384 KB Output is correct
12 Correct 4 ms 384 KB Output is correct
13 Correct 4 ms 384 KB Output is correct
14 Correct 5 ms 384 KB Output is correct
15 Correct 4 ms 384 KB Output is correct
16 Correct 11 ms 1536 KB Output is correct
17 Correct 76 ms 7660 KB Output is correct
18 Correct 4 ms 384 KB Output is correct
19 Correct 5 ms 384 KB Output is correct
20 Incorrect 5 ms 384 KB Output isn't correct
21 Halted 0 ms 0 KB -