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Submission #663093

# Submission time Handle Problem Language Result Execution time Memory
663093 2022-11-26T15:39:26 Z Ai7081 Strange Device (APIO19_strange_device) C++17
65 / 100
 462 ms 16904 KB 
#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define pii pair<ll, ll>

const ll inf = 1e18+1;

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

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

int main() {
    ios_base::sync_with_stdio(false); cin.tie(0);
    cin >> n >> a >> b;
    a/=gcd(a,b+1);
    double da=a, db=b;
    da*=db;
    loop = (da>1e18 ? 1e18+1 : da);
    while (n--) {
        cin >> l >> r, l%=loop, r%=loop;
        if (l>r) v.push_back({0,r}), v.push_back({l,loop-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 0 ms 212 KB Output is correct
2 Correct 4 ms 600 KB Output is correct
3 Correct 4 ms 600 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 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 0 ms 212 KB Output is correct
10 Correct 0 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 1 ms 212 KB Output is correct
16 Correct 4 ms 600 KB Output is correct
17 Correct 41 ms 2448 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 1 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 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 301 ms 16860 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 418 ms 16792 KB Output is correct
3 Correct 379 ms 16812 KB Output is correct
4 Correct 385 ms 16816 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 418 ms 16792 KB Output is correct
3 Correct 379 ms 16812 KB Output is correct
4 Correct 385 ms 16816 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 397 ms 16904 KB Output is correct
7 Correct 391 ms 16860 KB Output is correct
8 Correct 387 ms 16868 KB Output is correct
9 Correct 424 ms 16760 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 418 ms 16792 KB Output is correct
3 Correct 379 ms 16812 KB Output is correct
4 Correct 385 ms 16816 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 38 ms 2476 KB Output is correct
7 Correct 41 ms 2512 KB Output is correct
8 Correct 37 ms 2504 KB Output is correct
9 Correct 37 ms 2492 KB Output is correct
10 Correct 37 ms 2444 KB Output is correct
11 Correct 38 ms 2376 KB Output is correct
12 Correct 38 ms 2512 KB Output is correct
13 Correct 42 ms 2484 KB Output is correct
14 Correct 38 ms 2416 KB Output is correct
15 Correct 41 ms 2460 KB Output is correct
16 Correct 41 ms 2512 KB Output is correct
17 Correct 39 ms 2484 KB Output is correct
18 Correct 429 ms 16848 KB Output is correct
19 Correct 377 ms 16852 KB Output is correct
20 Correct 462 ms 16856 KB Output is correct
21 Correct 40 ms 2480 KB Output is correct
22 Correct 43 ms 2468 KB Output is correct
23 Correct 121 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 41 ms 2468 KB Output is correct
3 Correct 40 ms 2512 KB Output is correct
4 Correct 448 ms 16816 KB Output is correct
5 Correct 51 ms 2500 KB Output is correct
6 Correct 47 ms 2428 KB Output is correct
7 Correct 42 ms 2424 KB Output is correct
8 Correct 45 ms 2428 KB Output is correct
9 Correct 42 ms 2512 KB Output is correct
10 Correct 41 ms 2512 KB Output is correct
11 Correct 43 ms 2452 KB Output is correct
12 Correct 41 ms 2416 KB Output is correct
13 Correct 40 ms 2524 KB Output is correct
14 Correct 452 ms 16764 KB Output is correct
15 Correct 47 ms 2460 KB Output is correct
16 Correct 398 ms 16768 KB Output is correct
17 Correct 419 ms 16812 KB Output is correct
18 Correct 1 ms 212 KB Output is correct

Subtask #8
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 4 ms 600 KB Output is correct
3 Correct 4 ms 600 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 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 0 ms 212 KB Output is correct
10 Correct 0 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 1 ms 212 KB Output is correct
16 Correct 4 ms 600 KB Output is correct
17 Correct 41 ms 2448 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Incorrect 0 ms 212 KB Output isn't correct
21 Halted 0 ms 0 KB -