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Submission #217021

# Submission time Handle Problem Language Result Execution time Memory
217021 2020-03-28T17:58:14 Z sevlll Strange Device (APIO19_strange_device) C++17
35 / 100
 952 ms 81860 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[1].second;
        if (r - l >= num) {
            cout << (int) num;
        } else {
            if (l == r) {
                cout << 1;
            } else {
                l %= num;
                r %= num;
                if (l < r) {
                    cout << r - l + 1;
                } else {
                    cout << r + (int) num - l;
                }
            }
        }
        return 0;
    }
    vector<pair<__int128_t, 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;
    __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 11 ms 1660 KB Output is correct
3 Correct 11 ms 1660 KB Output is correct
4 Correct 4 ms 384 KB Output is correct
5 Correct 4 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 4 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 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 1660 KB Output is correct
17 Correct 85 ms 10216 KB Output is correct
18 Incorrect 5 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 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 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 516 ms 81800 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 740 ms 81788 KB Output is correct
3 Correct 778 ms 81860 KB Output is correct
4 Correct 726 ms 81856 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 740 ms 81788 KB Output is correct
3 Correct 778 ms 81860 KB Output is correct
4 Correct 726 ms 81856 KB Output is correct
5 Correct 4 ms 384 KB Output is correct
6 Correct 750 ms 81856 KB Output is correct
7 Correct 731 ms 81828 KB Output is correct
8 Correct 737 ms 81800 KB Output is correct
9 Correct 915 ms 81860 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 740 ms 81788 KB Output is correct
3 Correct 778 ms 81860 KB Output is correct
4 Correct 726 ms 81856 KB Output is correct
5 Correct 4 ms 384 KB Output is correct
6 Correct 71 ms 10344 KB Output is correct
7 Correct 74 ms 10216 KB Output is correct
8 Correct 75 ms 10216 KB Output is correct
9 Correct 73 ms 10216 KB Output is correct
10 Correct 73 ms 10216 KB Output is correct
11 Correct 76 ms 10344 KB Output is correct
12 Correct 72 ms 10216 KB Output is correct
13 Correct 80 ms 10216 KB Output is correct
14 Correct 70 ms 10216 KB Output is correct
15 Correct 86 ms 10220 KB Output is correct
16 Correct 86 ms 10220 KB Output is correct
17 Correct 74 ms 10216 KB Output is correct
18 Correct 730 ms 81824 KB Output is correct
19 Correct 720 ms 81824 KB Output is correct
20 Correct 933 ms 81824 KB Output is correct
21 Correct 94 ms 10344 KB Output is correct
22 Correct 68 ms 10216 KB Output is correct
23 Correct 209 ms 38620 KB Output is correct

Subtask #7
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 384 KB Output is correct
2 Correct 80 ms 10216 KB Output is correct
3 Correct 83 ms 10216 KB Output is correct
4 Correct 952 ms 81824 KB Output is correct
5 Correct 80 ms 10216 KB Output is correct
6 Correct 78 ms 10216 KB Output is correct
7 Correct 85 ms 10216 KB Output is correct
8 Correct 84 ms 10216 KB Output is correct
9 Correct 88 ms 10344 KB Output is correct
10 Correct 87 ms 10216 KB Output is correct
11 Correct 82 ms 10348 KB Output is correct
12 Correct 73 ms 10216 KB Output is correct
13 Correct 86 ms 10216 KB Output is correct
14 Correct 910 ms 81824 KB Output is correct
15 Correct 94 ms 10216 KB Output is correct
16 Correct 700 ms 81824 KB Output is correct
17 Correct 752 ms 81824 KB Output is correct
18 Incorrect 5 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 11 ms 1660 KB Output is correct
3 Correct 11 ms 1660 KB Output is correct
4 Correct 4 ms 384 KB Output is correct
5 Correct 4 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 4 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 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 1660 KB Output is correct
17 Correct 85 ms 10216 KB Output is correct
18 Incorrect 5 ms 384 KB Output isn't correct