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Submission #663158

# Submission time Handle Problem Language Result Execution time Memory
663158 2022-11-26T16:16:19 Z Ai7081 Strange Device (APIO19_strange_device) C++17
65 / 100
 496 ms 16956 KB 
#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define pii pair<ll, ll>

const ll inf = 5e18;

ll n, a, b, l, r, p;
vector<pii> v;

ll gcd(ll c1, ll c2) {
    if (!c2) return c1;
    return gcd(c2, c1%c2);
}

int main() {
    ios_base::sync_with_stdio(false); cin.tie(0);
    cin >> n >> a >> b;
    a/=gcd(a,b+1);
    p = (inf/b>a ? a*b : inf);
    while (n--) {
        cin >> l >> r, l%=p, r%=p;
        if (l>r) v.push_back({0,r}), v.push_back({l,p-1});
        else v.push_back({l,r});
    }
    sort(v.begin(), v.end());
    ll out=0, ma=-1;
    for (auto [x,y]:v) out += (ma<x ? y-x+1 : max((ll)0,y-ma)), ma=max(ma,y);
    cout << out;
    return 0;
}

/*
3 3 3
4 4
7 9
17 18
ans: 4

3 5 10
1 20
50 68
89 98
ans: 31

1 1000000000000000 1000000000000000000
100000 1000000
*/

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 5 ms 600 KB Output is correct
3 Correct 4 ms 600 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 4 ms 600 KB Output is correct
17 Correct 49 ms 2468 KB Output is correct
18 Correct 0 ms 212 KB Output is correct

Subtask #2
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Incorrect 0 ms 212 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 212 KB Output is correct
2 Correct 2 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 301 ms 16808 KB Output is correct

Subtask #4
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 401 ms 16956 KB Output is correct
3 Correct 376 ms 16932 KB Output is correct
4 Correct 385 ms 16840 KB Output is correct

Subtask #5
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 401 ms 16956 KB Output is correct
3 Correct 376 ms 16932 KB Output is correct
4 Correct 385 ms 16840 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 396 ms 16788 KB Output is correct
7 Correct 407 ms 16948 KB Output is correct
8 Correct 410 ms 16832 KB Output is correct
9 Correct 432 ms 16844 KB Output is correct

Subtask #6
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 401 ms 16956 KB Output is correct
3 Correct 376 ms 16932 KB Output is correct
4 Correct 385 ms 16840 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 39 ms 2512 KB Output is correct
7 Correct 41 ms 2460 KB Output is correct
8 Correct 49 ms 2420 KB Output is correct
9 Correct 43 ms 2464 KB Output is correct
10 Correct 39 ms 2444 KB Output is correct
11 Correct 40 ms 2512 KB Output is correct
12 Correct 38 ms 2512 KB Output is correct
13 Correct 41 ms 2388 KB Output is correct
14 Correct 39 ms 2512 KB Output is correct
15 Correct 43 ms 2512 KB Output is correct
16 Correct 43 ms 2480 KB Output is correct
17 Correct 41 ms 2504 KB Output is correct
18 Correct 399 ms 16832 KB Output is correct
19 Correct 388 ms 16828 KB Output is correct
20 Correct 436 ms 16868 KB Output is correct
21 Correct 40 ms 2452 KB Output is correct
22 Correct 35 ms 2520 KB Output is correct
23 Correct 120 ms 8676 KB Output is correct

Subtask #7
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 46 ms 2592 KB Output is correct
3 Correct 42 ms 2512 KB Output is correct
4 Correct 496 ms 16844 KB Output is correct
5 Correct 52 ms 2496 KB Output is correct
6 Correct 43 ms 2512 KB Output is correct
7 Correct 63 ms 2464 KB Output is correct
8 Correct 43 ms 2512 KB Output is correct
9 Correct 50 ms 2460 KB Output is correct
10 Correct 42 ms 2496 KB Output is correct
11 Correct 46 ms 2496 KB Output is correct
12 Correct 38 ms 2512 KB Output is correct
13 Correct 45 ms 2512 KB Output is correct
14 Correct 475 ms 16752 KB Output is correct
15 Correct 48 ms 2504 KB Output is correct
16 Correct 424 ms 16768 KB Output is correct
17 Correct 403 ms 16844 KB Output is correct
18 Correct 0 ms 212 KB Output is correct

Subtask #8
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 5 ms 600 KB Output is correct
3 Correct 4 ms 600 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 4 ms 600 KB Output is correct
17 Correct 49 ms 2468 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Incorrect 0 ms 212 KB Output isn't correct
21 Halted 0 ms 0 KB -