#include <bits/stdc++.h>
#define st first
#define nd second
using namespace std;
using ll = long long;
int n; ll a, b, v, m;
vector< pair< ll, ll > > ilo;
ll gcd(const ll a, const ll b)
{
return (b == 0? a : gcd(b, a % b));
}
int main()
{
ios::sync_with_stdio(false);
cin.tie(nullptr);
cin >> n >> a >> b;
v = gcd(a, b + 1);
__int128 q = a / v * b;
if (q >= (ll)(1e18) + 1) m = (ll)(1e18) + 1;
else m = q;
//cerr << "m: " << m << '\n';
for (int i = 0; i < n; ++i)
{
ll l, r; cin >> l >> r;
if (r - l + 1 >= m)
return cout << m << '\n', 0;
r %= m; l %= m;
if (l > r)
ilo.push_back({l, m - 1}), ilo.push_back({0, r});
else
ilo.push_back({l, r});
}
sort(begin(ilo), end(ilo));
//for (int i = 0; i < ilo.size(); ++i)
//cerr << ilo[i].st << ' ' << ilo[i].nd << '\n';
ll c = 0, p = -1;
for (int i = 0; i < ilo.size(); ++i)
{
//cerr << p << ' ' << ilo[i].st << ' ' << ilo[i].nd << ' ';
c += (max(0ll, ilo[i].nd - max(ilo[i].st - 1, p))), p = max(p, ilo[i].nd);
//cerr << c << '\n';
}
cout << c << '\n';
}
Compilation message
strange_device.cpp: In function 'int main()':
strange_device.cpp:47:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for (int i = 0; i < ilo.size(); ++i)
~~^~~~~~~~~~~~
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
2 ms |
376 KB |
Output is correct |
2 |
Correct |
8 ms |
1016 KB |
Output is correct |
3 |
Correct |
8 ms |
1044 KB |
Output is correct |
4 |
Correct |
2 ms |
256 KB |
Output is correct |
5 |
Correct |
2 ms |
404 KB |
Output is correct |
6 |
Correct |
2 ms |
256 KB |
Output is correct |
7 |
Correct |
2 ms |
376 KB |
Output is correct |
8 |
Correct |
2 ms |
376 KB |
Output is correct |
9 |
Correct |
2 ms |
376 KB |
Output is correct |
10 |
Correct |
2 ms |
376 KB |
Output is correct |
11 |
Correct |
2 ms |
256 KB |
Output is correct |
12 |
Correct |
2 ms |
256 KB |
Output is correct |
13 |
Correct |
2 ms |
376 KB |
Output is correct |
14 |
Correct |
2 ms |
256 KB |
Output is correct |
15 |
Correct |
2 ms |
376 KB |
Output is correct |
16 |
Correct |
9 ms |
1144 KB |
Output is correct |
17 |
Correct |
68 ms |
4208 KB |
Output is correct |
18 |
Incorrect |
2 ms |
376 KB |
Output isn't correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
2 ms |
376 KB |
Output is correct |
2 |
Correct |
2 ms |
376 KB |
Output is correct |
3 |
Correct |
2 ms |
376 KB |
Output is correct |
4 |
Correct |
2 ms |
256 KB |
Output is correct |
5 |
Incorrect |
2 ms |
376 KB |
Output isn't correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
2 ms |
376 KB |
Output is correct |
2 |
Correct |
3 ms |
376 KB |
Output is correct |
3 |
Correct |
3 ms |
376 KB |
Output is correct |
4 |
Correct |
3 ms |
396 KB |
Output is correct |
5 |
Correct |
449 ms |
18276 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
2 ms |
376 KB |
Output is correct |
2 |
Correct |
614 ms |
17800 KB |
Output is correct |
3 |
Correct |
608 ms |
17624 KB |
Output is correct |
4 |
Correct |
601 ms |
17612 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
2 ms |
376 KB |
Output is correct |
2 |
Correct |
614 ms |
17800 KB |
Output is correct |
3 |
Correct |
608 ms |
17624 KB |
Output is correct |
4 |
Correct |
601 ms |
17612 KB |
Output is correct |
5 |
Correct |
2 ms |
348 KB |
Output is correct |
6 |
Correct |
601 ms |
17584 KB |
Output is correct |
7 |
Correct |
606 ms |
17576 KB |
Output is correct |
8 |
Correct |
603 ms |
17636 KB |
Output is correct |
9 |
Correct |
684 ms |
17620 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
2 ms |
376 KB |
Output is correct |
2 |
Correct |
614 ms |
17800 KB |
Output is correct |
3 |
Correct |
608 ms |
17624 KB |
Output is correct |
4 |
Correct |
601 ms |
17612 KB |
Output is correct |
5 |
Correct |
2 ms |
376 KB |
Output is correct |
6 |
Correct |
62 ms |
3984 KB |
Output is correct |
7 |
Correct |
66 ms |
3824 KB |
Output is correct |
8 |
Correct |
62 ms |
3824 KB |
Output is correct |
9 |
Correct |
65 ms |
3816 KB |
Output is correct |
10 |
Correct |
63 ms |
3900 KB |
Output is correct |
11 |
Correct |
65 ms |
3824 KB |
Output is correct |
12 |
Correct |
63 ms |
3820 KB |
Output is correct |
13 |
Correct |
68 ms |
3824 KB |
Output is correct |
14 |
Correct |
62 ms |
3824 KB |
Output is correct |
15 |
Correct |
69 ms |
3824 KB |
Output is correct |
16 |
Correct |
67 ms |
3788 KB |
Output is correct |
17 |
Correct |
65 ms |
3864 KB |
Output is correct |
18 |
Correct |
610 ms |
17860 KB |
Output is correct |
19 |
Correct |
610 ms |
17452 KB |
Output is correct |
20 |
Correct |
666 ms |
17492 KB |
Output is correct |
21 |
Correct |
68 ms |
3836 KB |
Output is correct |
22 |
Correct |
61 ms |
3824 KB |
Output is correct |
23 |
Correct |
194 ms |
10948 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
6 ms |
420 KB |
Output is correct |
2 |
Correct |
67 ms |
3820 KB |
Output is correct |
3 |
Correct |
69 ms |
3412 KB |
Output is correct |
4 |
Correct |
685 ms |
17460 KB |
Output is correct |
5 |
Correct |
68 ms |
3604 KB |
Output is correct |
6 |
Correct |
68 ms |
3564 KB |
Output is correct |
7 |
Correct |
70 ms |
3564 KB |
Output is correct |
8 |
Correct |
68 ms |
3312 KB |
Output is correct |
9 |
Correct |
66 ms |
3320 KB |
Output is correct |
10 |
Correct |
67 ms |
3316 KB |
Output is correct |
11 |
Correct |
67 ms |
3408 KB |
Output is correct |
12 |
Correct |
60 ms |
3304 KB |
Output is correct |
13 |
Correct |
67 ms |
3312 KB |
Output is correct |
14 |
Correct |
657 ms |
17308 KB |
Output is correct |
15 |
Correct |
66 ms |
3312 KB |
Output is correct |
16 |
Correct |
607 ms |
17260 KB |
Output is correct |
17 |
Correct |
596 ms |
17356 KB |
Output is correct |
18 |
Incorrect |
3 ms |
376 KB |
Output isn't correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
2 ms |
376 KB |
Output is correct |
2 |
Correct |
8 ms |
1016 KB |
Output is correct |
3 |
Correct |
8 ms |
1044 KB |
Output is correct |
4 |
Correct |
2 ms |
256 KB |
Output is correct |
5 |
Correct |
2 ms |
404 KB |
Output is correct |
6 |
Correct |
2 ms |
256 KB |
Output is correct |
7 |
Correct |
2 ms |
376 KB |
Output is correct |
8 |
Correct |
2 ms |
376 KB |
Output is correct |
9 |
Correct |
2 ms |
376 KB |
Output is correct |
10 |
Correct |
2 ms |
376 KB |
Output is correct |
11 |
Correct |
2 ms |
256 KB |
Output is correct |
12 |
Correct |
2 ms |
256 KB |
Output is correct |
13 |
Correct |
2 ms |
376 KB |
Output is correct |
14 |
Correct |
2 ms |
256 KB |
Output is correct |
15 |
Correct |
2 ms |
376 KB |
Output is correct |
16 |
Correct |
9 ms |
1144 KB |
Output is correct |
17 |
Correct |
68 ms |
4208 KB |
Output is correct |
18 |
Incorrect |
2 ms |
376 KB |
Output isn't correct |