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Submission #663192

# Submission time Handle Problem Language Result Execution time Memory
663192 2022-11-26T16:33:11 Z Ai7081 Strange Device (APIO19_strange_device) C++17
65 / 100
 437 ms 16876 KB 
#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define pii pair<ll, ll>

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;
    ll tmp = a/gcd(b+1, a);
    if ((double)tmp > (double)1e18+1/b) p = 1e18+1;
    else p = tmp*b;
    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 0 ms 212 KB Output is correct
2 Correct 4 ms 600 KB Output is correct
3 Correct 5 ms 600 KB Output is correct
4 Correct 0 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 0 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 0 ms 212 KB Output is correct
12 Correct 0 ms 224 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 40 ms 2512 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 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 292 ms 16844 KB Output is correct

Subtask #4
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 395 ms 16764 KB Output is correct
3 Correct 379 ms 16840 KB Output is correct
4 Correct 367 ms 16872 KB Output is correct

Subtask #5
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 395 ms 16764 KB Output is correct
3 Correct 379 ms 16840 KB Output is correct
4 Correct 367 ms 16872 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 387 ms 16824 KB Output is correct
7 Correct 400 ms 16872 KB Output is correct
8 Correct 370 ms 16856 KB Output is correct
9 Correct 393 ms 16824 KB Output is correct

Subtask #6
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 395 ms 16764 KB Output is correct
3 Correct 379 ms 16840 KB Output is correct
4 Correct 367 ms 16872 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 36 ms 2512 KB Output is correct
7 Correct 39 ms 2524 KB Output is correct
8 Correct 36 ms 2444 KB Output is correct
9 Correct 38 ms 2452 KB Output is correct
10 Correct 36 ms 2444 KB Output is correct
11 Correct 36 ms 2500 KB Output is correct
12 Correct 35 ms 2480 KB Output is correct
13 Correct 38 ms 2452 KB Output is correct
14 Correct 36 ms 2444 KB Output is correct
15 Correct 39 ms 2484 KB Output is correct
16 Correct 45 ms 2484 KB Output is correct
17 Correct 38 ms 2512 KB Output is correct
18 Correct 374 ms 16764 KB Output is correct
19 Correct 362 ms 16780 KB Output is correct
20 Correct 403 ms 16796 KB Output is correct
21 Correct 40 ms 2404 KB Output is correct
22 Correct 36 ms 2476 KB Output is correct
23 Correct 124 ms 8636 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 40 ms 2520 KB Output is correct
3 Correct 40 ms 2512 KB Output is correct
4 Correct 437 ms 16848 KB Output is correct
5 Correct 39 ms 2512 KB Output is correct
6 Correct 43 ms 2480 KB Output is correct
7 Correct 43 ms 2392 KB Output is correct
8 Correct 52 ms 2456 KB Output is correct
9 Correct 44 ms 2444 KB Output is correct
10 Correct 45 ms 2448 KB Output is correct
11 Correct 40 ms 2492 KB Output is correct
12 Correct 36 ms 2428 KB Output is correct
13 Correct 40 ms 2444 KB Output is correct
14 Correct 424 ms 16772 KB Output is correct
15 Correct 39 ms 2476 KB Output is correct
16 Correct 392 ms 16876 KB Output is correct
17 Correct 428 ms 16764 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 0 ms 212 KB Output is correct
2 Correct 4 ms 600 KB Output is correct
3 Correct 5 ms 600 KB Output is correct
4 Correct 0 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 0 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 0 ms 212 KB Output is correct
12 Correct 0 ms 224 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 40 ms 2512 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 -