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Submission #663201

# Submission time Handle Problem Language Result Execution time Memory
663201 2022-11-26T16:38:43 Z Ai7081 Strange Device (APIO19_strange_device) C++17
100 / 100
 468 ms 53416 KB 
#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define pii pair<ll, ll>

const ll inf = 2e18;

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);
    bool done = false;
    while (n--) {
        cin >> l >> r;
        if (done) continue;
        if (r-l >= p) {done = true; continue;}
        l%=p, r%=p;
        if (l>r) v.push_back({0, r}), v.push_back({l, p-1});
        else v.push_back({l, r});
    }
    if (done) {cout << p; return 0;}
    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 5 ms 604 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 0 ms 212 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 4 ms 600 KB Output is correct
17 Correct 41 ms 2456 KB Output is correct
18 Correct 0 ms 212 KB Output is correct

Subtask #2
5.0 / 5.0

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

Subtask #3
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 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 283 ms 16748 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 379 ms 16868 KB Output is correct
3 Correct 369 ms 16872 KB Output is correct
4 Correct 364 ms 16944 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 379 ms 16868 KB Output is correct
3 Correct 369 ms 16872 KB Output is correct
4 Correct 364 ms 16944 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 373 ms 16848 KB Output is correct
7 Correct 371 ms 16904 KB Output is correct
8 Correct 368 ms 16812 KB Output is correct
9 Correct 395 ms 16848 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 379 ms 16868 KB Output is correct
3 Correct 369 ms 16872 KB Output is correct
4 Correct 364 ms 16944 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 36 ms 2524 KB Output is correct
7 Correct 39 ms 2516 KB Output is correct
8 Correct 37 ms 2392 KB Output is correct
9 Correct 37 ms 2484 KB Output is correct
10 Correct 36 ms 2476 KB Output is correct
11 Correct 37 ms 2512 KB Output is correct
12 Correct 35 ms 2500 KB Output is correct
13 Correct 38 ms 2384 KB Output is correct
14 Correct 37 ms 2580 KB Output is correct
15 Correct 41 ms 2520 KB Output is correct
16 Correct 38 ms 2404 KB Output is correct
17 Correct 36 ms 2440 KB Output is correct
18 Correct 373 ms 16828 KB Output is correct
19 Correct 371 ms 16816 KB Output is correct
20 Correct 398 ms 16796 KB Output is correct
21 Correct 39 ms 2512 KB Output is correct
22 Correct 34 ms 2420 KB Output is correct
23 Correct 117 ms 8640 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 38 ms 2384 KB Output is correct
3 Correct 38 ms 2476 KB Output is correct
4 Correct 426 ms 16944 KB Output is correct
5 Correct 38 ms 2512 KB Output is correct
6 Correct 40 ms 2520 KB Output is correct
7 Correct 38 ms 2464 KB Output is correct
8 Correct 39 ms 2436 KB Output is correct
9 Correct 38 ms 2500 KB Output is correct
10 Correct 41 ms 2436 KB Output is correct
11 Correct 38 ms 2496 KB Output is correct
12 Correct 35 ms 2504 KB Output is correct
13 Correct 39 ms 2524 KB Output is correct
14 Correct 394 ms 16788 KB Output is correct
15 Correct 39 ms 2504 KB Output is correct
16 Correct 368 ms 16812 KB Output is correct
17 Correct 356 ms 16904 KB Output is correct
18 Correct 0 ms 212 KB Output is correct

Subtask #8
30.0 / 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 5 ms 604 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 0 ms 212 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 4 ms 600 KB Output is correct
17 Correct 41 ms 2456 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 1 ms 212 KB Output is correct
21 Correct 0 ms 212 KB Output is correct
22 Correct 1 ms 212 KB Output is correct
23 Correct 1 ms 212 KB Output is correct
24 Correct 1 ms 212 KB Output is correct
25 Correct 1 ms 340 KB Output is correct
26 Correct 1 ms 340 KB Output is correct
27 Correct 1 ms 340 KB Output is correct
28 Correct 283 ms 16748 KB Output is correct
29 Correct 0 ms 212 KB Output is correct
30 Correct 379 ms 16868 KB Output is correct
31 Correct 369 ms 16872 KB Output is correct
32 Correct 364 ms 16944 KB Output is correct
33 Correct 0 ms 212 KB Output is correct
34 Correct 373 ms 16848 KB Output is correct
35 Correct 371 ms 16904 KB Output is correct
36 Correct 368 ms 16812 KB Output is correct
37 Correct 395 ms 16848 KB Output is correct
38 Correct 0 ms 212 KB Output is correct
39 Correct 36 ms 2524 KB Output is correct
40 Correct 39 ms 2516 KB Output is correct
41 Correct 37 ms 2392 KB Output is correct
42 Correct 37 ms 2484 KB Output is correct
43 Correct 36 ms 2476 KB Output is correct
44 Correct 37 ms 2512 KB Output is correct
45 Correct 35 ms 2500 KB Output is correct
46 Correct 38 ms 2384 KB Output is correct
47 Correct 37 ms 2580 KB Output is correct
48 Correct 41 ms 2520 KB Output is correct
49 Correct 38 ms 2404 KB Output is correct
50 Correct 36 ms 2440 KB Output is correct
51 Correct 373 ms 16828 KB Output is correct
52 Correct 371 ms 16816 KB Output is correct
53 Correct 398 ms 16796 KB Output is correct
54 Correct 39 ms 2512 KB Output is correct
55 Correct 34 ms 2420 KB Output is correct
56 Correct 117 ms 8640 KB Output is correct
57 Correct 0 ms 212 KB Output is correct
58 Correct 38 ms 2384 KB Output is correct
59 Correct 38 ms 2476 KB Output is correct
60 Correct 426 ms 16944 KB Output is correct
61 Correct 38 ms 2512 KB Output is correct
62 Correct 40 ms 2520 KB Output is correct
63 Correct 38 ms 2464 KB Output is correct
64 Correct 39 ms 2436 KB Output is correct
65 Correct 38 ms 2500 KB Output is correct
66 Correct 41 ms 2436 KB Output is correct
67 Correct 38 ms 2496 KB Output is correct
68 Correct 35 ms 2504 KB Output is correct
69 Correct 39 ms 2524 KB Output is correct
70 Correct 394 ms 16788 KB Output is correct
71 Correct 39 ms 2504 KB Output is correct
72 Correct 368 ms 16812 KB Output is correct
73 Correct 356 ms 16904 KB Output is correct
74 Correct 0 ms 212 KB Output is correct
75 Correct 0 ms 212 KB Output is correct
76 Correct 1 ms 212 KB Output is correct
77 Correct 1 ms 320 KB Output is correct
78 Correct 0 ms 212 KB Output is correct
79 Correct 4 ms 980 KB Output is correct
80 Correct 463 ms 53416 KB Output is correct
81 Correct 468 ms 53276 KB Output is correct
82 Correct 408 ms 53188 KB Output is correct
83 Correct 417 ms 53384 KB Output is correct
84 Correct 420 ms 53276 KB Output is correct
85 Correct 411 ms 53240 KB Output is correct
86 Correct 126 ms 18488 KB Output is correct
87 Correct 1 ms 212 KB Output is correct