#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
int main()
{
cin.tie(0) -> ios_base::sync_with_stdio(0);
ll n, a, b;
cin >> n >> a >> b;
if(a > 1e18 / b)
{
ll sum = 0;
for(int i = 0; i < n; i++)
{
ll l, r;
cin >> l >> r;
sum += r - l + 1;
}
cout << sum;
}
else
{
ll g = a * b / gcd(a, b + 1);
map<ll, vector<ll>> M;
for(int i = 0; i < n; i++)
{
ll l, r;
cin >> l >> r;
if(r - l + 1 >= g) {
cout << g << "\n";
return 0;
}
l %= g, r %= g;
if(r < l)
{
M[0].push_back(r);
M[l].push_back(g - 1);
}
else
{
M[l].push_back(r);
}
}
multiset<ll> S;
vector<pair<ll,ll>> intervals;
ll begin = 2e18, last = 0;
for(auto &[st, v] : M)
{
while(!S.empty() && *S.begin() < st)
{
S.erase(S.begin());
}
if(S.empty() && begin != 2e18)
{
intervals.push_back({begin, last});
begin = 2e18;
last = 0;
}
begin = min(begin, st);
for(auto i : v)
{
S.insert(i);
last = max(last, i);
}
}
if(!S.empty() && begin != 2e18)
{
while(!S.empty())
{
last = max(last, *S.begin());
S.erase(S.begin());
}
intervals.push_back({begin, last});
}
long long ans = 0;
for(auto [l, r] : intervals)
{
ans += r - l + 1;
}
cout << ans;
}
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
212 KB |
Output is correct |
2 |
Correct |
8 ms |
1876 KB |
Output is correct |
3 |
Correct |
8 ms |
1852 KB |
Output is correct |
4 |
Correct |
1 ms |
212 KB |
Output is correct |
5 |
Correct |
1 ms |
324 KB |
Output is correct |
6 |
Correct |
1 ms |
212 KB |
Output is correct |
7 |
Correct |
1 ms |
212 KB |
Output is correct |
8 |
Correct |
1 ms |
212 KB |
Output is correct |
9 |
Correct |
1 ms |
320 KB |
Output is correct |
10 |
Correct |
1 ms |
212 KB |
Output is correct |
11 |
Correct |
1 ms |
212 KB |
Output is correct |
12 |
Correct |
1 ms |
212 KB |
Output is correct |
13 |
Correct |
1 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 |
7 ms |
1936 KB |
Output is correct |
17 |
Correct |
71 ms |
13716 KB |
Output is correct |
18 |
Correct |
1 ms |
212 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
316 KB |
Output is correct |
2 |
Correct |
1 ms |
316 KB |
Output is correct |
3 |
Correct |
1 ms |
212 KB |
Output is correct |
4 |
Correct |
1 ms |
212 KB |
Output is correct |
5 |
Correct |
1 ms |
212 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
212 KB |
Output is correct |
2 |
Correct |
1 ms |
468 KB |
Output is correct |
3 |
Correct |
1 ms |
468 KB |
Output is correct |
4 |
Correct |
1 ms |
468 KB |
Output is correct |
5 |
Correct |
535 ms |
55300 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
212 KB |
Output is correct |
2 |
Correct |
696 ms |
126700 KB |
Output is correct |
3 |
Correct |
706 ms |
126652 KB |
Output is correct |
4 |
Correct |
708 ms |
126636 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
212 KB |
Output is correct |
2 |
Correct |
696 ms |
126700 KB |
Output is correct |
3 |
Correct |
706 ms |
126652 KB |
Output is correct |
4 |
Correct |
708 ms |
126636 KB |
Output is correct |
5 |
Correct |
1 ms |
212 KB |
Output is correct |
6 |
Correct |
767 ms |
126648 KB |
Output is correct |
7 |
Correct |
714 ms |
126732 KB |
Output is correct |
8 |
Correct |
671 ms |
126616 KB |
Output is correct |
9 |
Correct |
710 ms |
126664 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
212 KB |
Output is correct |
2 |
Correct |
696 ms |
126700 KB |
Output is correct |
3 |
Correct |
706 ms |
126652 KB |
Output is correct |
4 |
Correct |
708 ms |
126636 KB |
Output is correct |
5 |
Correct |
1 ms |
212 KB |
Output is correct |
6 |
Correct |
69 ms |
13652 KB |
Output is correct |
7 |
Correct |
65 ms |
13688 KB |
Output is correct |
8 |
Correct |
66 ms |
13644 KB |
Output is correct |
9 |
Correct |
82 ms |
13652 KB |
Output is correct |
10 |
Correct |
74 ms |
13764 KB |
Output is correct |
11 |
Correct |
68 ms |
13632 KB |
Output is correct |
12 |
Correct |
66 ms |
13604 KB |
Output is correct |
13 |
Correct |
65 ms |
13608 KB |
Output is correct |
14 |
Correct |
65 ms |
13712 KB |
Output is correct |
15 |
Correct |
98 ms |
13676 KB |
Output is correct |
16 |
Correct |
80 ms |
13624 KB |
Output is correct |
17 |
Correct |
70 ms |
13624 KB |
Output is correct |
18 |
Correct |
696 ms |
126608 KB |
Output is correct |
19 |
Correct |
785 ms |
126700 KB |
Output is correct |
20 |
Correct |
804 ms |
126756 KB |
Output is correct |
21 |
Correct |
65 ms |
13704 KB |
Output is correct |
22 |
Correct |
74 ms |
13656 KB |
Output is correct |
23 |
Correct |
223 ms |
19476 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
320 KB |
Output is correct |
2 |
Correct |
71 ms |
13620 KB |
Output is correct |
3 |
Correct |
70 ms |
13704 KB |
Output is correct |
4 |
Correct |
797 ms |
126792 KB |
Output is correct |
5 |
Correct |
75 ms |
13692 KB |
Output is correct |
6 |
Correct |
68 ms |
13680 KB |
Output is correct |
7 |
Correct |
81 ms |
13720 KB |
Output is correct |
8 |
Correct |
77 ms |
13724 KB |
Output is correct |
9 |
Correct |
70 ms |
13640 KB |
Output is correct |
10 |
Correct |
65 ms |
13636 KB |
Output is correct |
11 |
Correct |
89 ms |
13624 KB |
Output is correct |
12 |
Correct |
73 ms |
13684 KB |
Output is correct |
13 |
Correct |
74 ms |
13656 KB |
Output is correct |
14 |
Correct |
763 ms |
126652 KB |
Output is correct |
15 |
Correct |
64 ms |
13768 KB |
Output is correct |
16 |
Correct |
724 ms |
126604 KB |
Output is correct |
17 |
Correct |
685 ms |
126784 KB |
Output is correct |
18 |
Correct |
1 ms |
212 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
212 KB |
Output is correct |
2 |
Correct |
8 ms |
1876 KB |
Output is correct |
3 |
Correct |
8 ms |
1852 KB |
Output is correct |
4 |
Correct |
1 ms |
212 KB |
Output is correct |
5 |
Correct |
1 ms |
324 KB |
Output is correct |
6 |
Correct |
1 ms |
212 KB |
Output is correct |
7 |
Correct |
1 ms |
212 KB |
Output is correct |
8 |
Correct |
1 ms |
212 KB |
Output is correct |
9 |
Correct |
1 ms |
320 KB |
Output is correct |
10 |
Correct |
1 ms |
212 KB |
Output is correct |
11 |
Correct |
1 ms |
212 KB |
Output is correct |
12 |
Correct |
1 ms |
212 KB |
Output is correct |
13 |
Correct |
1 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 |
7 ms |
1936 KB |
Output is correct |
17 |
Correct |
71 ms |
13716 KB |
Output is correct |
18 |
Correct |
1 ms |
212 KB |
Output is correct |
19 |
Correct |
1 ms |
316 KB |
Output is correct |
20 |
Correct |
1 ms |
316 KB |
Output is correct |
21 |
Correct |
1 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 |
468 KB |
Output is correct |
26 |
Correct |
1 ms |
468 KB |
Output is correct |
27 |
Correct |
1 ms |
468 KB |
Output is correct |
28 |
Correct |
535 ms |
55300 KB |
Output is correct |
29 |
Correct |
1 ms |
212 KB |
Output is correct |
30 |
Correct |
696 ms |
126700 KB |
Output is correct |
31 |
Correct |
706 ms |
126652 KB |
Output is correct |
32 |
Correct |
708 ms |
126636 KB |
Output is correct |
33 |
Correct |
1 ms |
212 KB |
Output is correct |
34 |
Correct |
767 ms |
126648 KB |
Output is correct |
35 |
Correct |
714 ms |
126732 KB |
Output is correct |
36 |
Correct |
671 ms |
126616 KB |
Output is correct |
37 |
Correct |
710 ms |
126664 KB |
Output is correct |
38 |
Correct |
1 ms |
212 KB |
Output is correct |
39 |
Correct |
69 ms |
13652 KB |
Output is correct |
40 |
Correct |
65 ms |
13688 KB |
Output is correct |
41 |
Correct |
66 ms |
13644 KB |
Output is correct |
42 |
Correct |
82 ms |
13652 KB |
Output is correct |
43 |
Correct |
74 ms |
13764 KB |
Output is correct |
44 |
Correct |
68 ms |
13632 KB |
Output is correct |
45 |
Correct |
66 ms |
13604 KB |
Output is correct |
46 |
Correct |
65 ms |
13608 KB |
Output is correct |
47 |
Correct |
65 ms |
13712 KB |
Output is correct |
48 |
Correct |
98 ms |
13676 KB |
Output is correct |
49 |
Correct |
80 ms |
13624 KB |
Output is correct |
50 |
Correct |
70 ms |
13624 KB |
Output is correct |
51 |
Correct |
696 ms |
126608 KB |
Output is correct |
52 |
Correct |
785 ms |
126700 KB |
Output is correct |
53 |
Correct |
804 ms |
126756 KB |
Output is correct |
54 |
Correct |
65 ms |
13704 KB |
Output is correct |
55 |
Correct |
74 ms |
13656 KB |
Output is correct |
56 |
Correct |
223 ms |
19476 KB |
Output is correct |
57 |
Correct |
1 ms |
320 KB |
Output is correct |
58 |
Correct |
71 ms |
13620 KB |
Output is correct |
59 |
Correct |
70 ms |
13704 KB |
Output is correct |
60 |
Correct |
797 ms |
126792 KB |
Output is correct |
61 |
Correct |
75 ms |
13692 KB |
Output is correct |
62 |
Correct |
68 ms |
13680 KB |
Output is correct |
63 |
Correct |
81 ms |
13720 KB |
Output is correct |
64 |
Correct |
77 ms |
13724 KB |
Output is correct |
65 |
Correct |
70 ms |
13640 KB |
Output is correct |
66 |
Correct |
65 ms |
13636 KB |
Output is correct |
67 |
Correct |
89 ms |
13624 KB |
Output is correct |
68 |
Correct |
73 ms |
13684 KB |
Output is correct |
69 |
Correct |
74 ms |
13656 KB |
Output is correct |
70 |
Correct |
763 ms |
126652 KB |
Output is correct |
71 |
Correct |
64 ms |
13768 KB |
Output is correct |
72 |
Correct |
724 ms |
126604 KB |
Output is correct |
73 |
Correct |
685 ms |
126784 KB |
Output is correct |
74 |
Correct |
1 ms |
212 KB |
Output is correct |
75 |
Correct |
1 ms |
256 KB |
Output is correct |
76 |
Correct |
0 ms |
212 KB |
Output is correct |
77 |
Correct |
1 ms |
212 KB |
Output is correct |
78 |
Correct |
1 ms |
212 KB |
Output is correct |
79 |
Correct |
10 ms |
2128 KB |
Output is correct |
80 |
Correct |
835 ms |
163640 KB |
Output is correct |
81 |
Correct |
785 ms |
163824 KB |
Output is correct |
82 |
Correct |
773 ms |
163696 KB |
Output is correct |
83 |
Correct |
771 ms |
163332 KB |
Output is correct |
84 |
Correct |
851 ms |
163284 KB |
Output is correct |
85 |
Correct |
818 ms |
163392 KB |
Output is correct |
86 |
Correct |
206 ms |
31420 KB |
Output is correct |
87 |
Correct |
1 ms |
212 KB |
Output is correct |