#include <bits/stdc++.h>
typedef long long ll;
int main() {
std::ios::sync_with_stdio(0); std::cin.tie(0);
ll n, a, b; std::cin >> n >> a >> b;
ll val = 1LL << 60LL, c = 0;
std::vector <std::pair <ll, ll>> p(n), v;
for (auto& P : p) std::cin >> P.first >> P.second;
int gcd = std::__gcd(a, b + 1);
if ((a / gcd) <= val / b) c = (a / gcd) * b;
for (auto& x : p) {
ll l = x.first, r = x.second;
if (c && r - l + 1LL >= c) {
std::cout << c << "\n";
return 0;
}
if (c) l %= c, r %= c;
if (l <= r) v.push_back({ l, r });
else v.push_back({ 0LL, r }), v.push_back({ l, c - 1LL });
}
ll last = -1, to = 0;
std::sort(v.begin(), v.end());
ll ans = 0;
for (auto& x : v) {
ll l = x.first, r = x.second;
if (last == -1LL) to = r, last = l;
else if (to < l) {
ans += to - last + 1LL;
to = r, last = l;
} else to = std::max(to, r);
}
if (last != -1LL) ans += to - last + 1LL;
std::cout << ans << "\n";
//std::cout.flush(); std::cin >> n;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
384 KB |
Output is correct |
2 |
Correct |
5 ms |
1280 KB |
Output is correct |
3 |
Correct |
6 ms |
1280 KB |
Output is correct |
4 |
Correct |
0 ms |
256 KB |
Output is correct |
5 |
Correct |
1 ms |
384 KB |
Output is correct |
6 |
Correct |
1 ms |
384 KB |
Output is correct |
7 |
Correct |
0 ms |
384 KB |
Output is correct |
8 |
Correct |
1 ms |
384 KB |
Output is correct |
9 |
Correct |
0 ms |
384 KB |
Output is correct |
10 |
Correct |
1 ms |
384 KB |
Output is correct |
11 |
Correct |
1 ms |
384 KB |
Output is correct |
12 |
Correct |
1 ms |
384 KB |
Output is correct |
13 |
Correct |
1 ms |
384 KB |
Output is correct |
14 |
Correct |
0 ms |
384 KB |
Output is correct |
15 |
Correct |
0 ms |
384 KB |
Output is correct |
16 |
Correct |
6 ms |
1280 KB |
Output is correct |
17 |
Correct |
52 ms |
7792 KB |
Output is correct |
18 |
Correct |
1 ms |
384 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
384 KB |
Output is correct |
2 |
Correct |
1 ms |
384 KB |
Output is correct |
3 |
Correct |
0 ms |
384 KB |
Output is correct |
4 |
Correct |
0 ms |
384 KB |
Output is correct |
5 |
Correct |
0 ms |
384 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
384 KB |
Output is correct |
2 |
Correct |
1 ms |
384 KB |
Output is correct |
3 |
Correct |
1 ms |
384 KB |
Output is correct |
4 |
Correct |
1 ms |
512 KB |
Output is correct |
5 |
Correct |
344 ms |
35456 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
384 KB |
Output is correct |
2 |
Correct |
468 ms |
37728 KB |
Output is correct |
3 |
Correct |
462 ms |
37732 KB |
Output is correct |
4 |
Correct |
458 ms |
37732 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
384 KB |
Output is correct |
2 |
Correct |
468 ms |
37728 KB |
Output is correct |
3 |
Correct |
462 ms |
37732 KB |
Output is correct |
4 |
Correct |
458 ms |
37732 KB |
Output is correct |
5 |
Correct |
0 ms |
384 KB |
Output is correct |
6 |
Correct |
462 ms |
37732 KB |
Output is correct |
7 |
Correct |
462 ms |
37732 KB |
Output is correct |
8 |
Correct |
466 ms |
37712 KB |
Output is correct |
9 |
Correct |
503 ms |
40292 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
384 KB |
Output is correct |
2 |
Correct |
468 ms |
37728 KB |
Output is correct |
3 |
Correct |
462 ms |
37732 KB |
Output is correct |
4 |
Correct |
458 ms |
37732 KB |
Output is correct |
5 |
Correct |
0 ms |
384 KB |
Output is correct |
6 |
Correct |
47 ms |
7828 KB |
Output is correct |
7 |
Correct |
53 ms |
7792 KB |
Output is correct |
8 |
Correct |
47 ms |
7792 KB |
Output is correct |
9 |
Correct |
48 ms |
7792 KB |
Output is correct |
10 |
Correct |
46 ms |
7792 KB |
Output is correct |
11 |
Correct |
50 ms |
7792 KB |
Output is correct |
12 |
Correct |
45 ms |
7792 KB |
Output is correct |
13 |
Correct |
49 ms |
7824 KB |
Output is correct |
14 |
Correct |
46 ms |
7792 KB |
Output is correct |
15 |
Correct |
51 ms |
7792 KB |
Output is correct |
16 |
Correct |
51 ms |
7920 KB |
Output is correct |
17 |
Correct |
47 ms |
7792 KB |
Output is correct |
18 |
Correct |
474 ms |
49120 KB |
Output is correct |
19 |
Correct |
849 ms |
50128 KB |
Output is correct |
20 |
Correct |
512 ms |
50532 KB |
Output is correct |
21 |
Correct |
51 ms |
7828 KB |
Output is correct |
22 |
Correct |
44 ms |
7792 KB |
Output is correct |
23 |
Correct |
154 ms |
26600 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
384 KB |
Output is correct |
2 |
Correct |
50 ms |
7792 KB |
Output is correct |
3 |
Correct |
51 ms |
7792 KB |
Output is correct |
4 |
Correct |
545 ms |
50636 KB |
Output is correct |
5 |
Correct |
50 ms |
7792 KB |
Output is correct |
6 |
Correct |
50 ms |
7792 KB |
Output is correct |
7 |
Correct |
49 ms |
7792 KB |
Output is correct |
8 |
Correct |
52 ms |
7792 KB |
Output is correct |
9 |
Correct |
50 ms |
7792 KB |
Output is correct |
10 |
Correct |
50 ms |
7792 KB |
Output is correct |
11 |
Correct |
50 ms |
7792 KB |
Output is correct |
12 |
Correct |
44 ms |
7792 KB |
Output is correct |
13 |
Correct |
50 ms |
7792 KB |
Output is correct |
14 |
Correct |
517 ms |
41604 KB |
Output is correct |
15 |
Correct |
52 ms |
7924 KB |
Output is correct |
16 |
Correct |
481 ms |
69732 KB |
Output is correct |
17 |
Correct |
457 ms |
37728 KB |
Output is correct |
18 |
Correct |
1 ms |
384 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
384 KB |
Output is correct |
2 |
Correct |
5 ms |
1280 KB |
Output is correct |
3 |
Correct |
6 ms |
1280 KB |
Output is correct |
4 |
Correct |
0 ms |
256 KB |
Output is correct |
5 |
Correct |
1 ms |
384 KB |
Output is correct |
6 |
Correct |
1 ms |
384 KB |
Output is correct |
7 |
Correct |
0 ms |
384 KB |
Output is correct |
8 |
Correct |
1 ms |
384 KB |
Output is correct |
9 |
Correct |
0 ms |
384 KB |
Output is correct |
10 |
Correct |
1 ms |
384 KB |
Output is correct |
11 |
Correct |
1 ms |
384 KB |
Output is correct |
12 |
Correct |
1 ms |
384 KB |
Output is correct |
13 |
Correct |
1 ms |
384 KB |
Output is correct |
14 |
Correct |
0 ms |
384 KB |
Output is correct |
15 |
Correct |
0 ms |
384 KB |
Output is correct |
16 |
Correct |
6 ms |
1280 KB |
Output is correct |
17 |
Correct |
52 ms |
7792 KB |
Output is correct |
18 |
Correct |
1 ms |
384 KB |
Output is correct |
19 |
Correct |
1 ms |
384 KB |
Output is correct |
20 |
Correct |
1 ms |
384 KB |
Output is correct |
21 |
Correct |
0 ms |
384 KB |
Output is correct |
22 |
Correct |
0 ms |
384 KB |
Output is correct |
23 |
Correct |
0 ms |
384 KB |
Output is correct |
24 |
Correct |
0 ms |
384 KB |
Output is correct |
25 |
Correct |
1 ms |
384 KB |
Output is correct |
26 |
Correct |
1 ms |
384 KB |
Output is correct |
27 |
Correct |
1 ms |
512 KB |
Output is correct |
28 |
Correct |
344 ms |
35456 KB |
Output is correct |
29 |
Correct |
0 ms |
384 KB |
Output is correct |
30 |
Correct |
468 ms |
37728 KB |
Output is correct |
31 |
Correct |
462 ms |
37732 KB |
Output is correct |
32 |
Correct |
458 ms |
37732 KB |
Output is correct |
33 |
Correct |
0 ms |
384 KB |
Output is correct |
34 |
Correct |
462 ms |
37732 KB |
Output is correct |
35 |
Correct |
462 ms |
37732 KB |
Output is correct |
36 |
Correct |
466 ms |
37712 KB |
Output is correct |
37 |
Correct |
503 ms |
40292 KB |
Output is correct |
38 |
Correct |
0 ms |
384 KB |
Output is correct |
39 |
Correct |
47 ms |
7828 KB |
Output is correct |
40 |
Correct |
53 ms |
7792 KB |
Output is correct |
41 |
Correct |
47 ms |
7792 KB |
Output is correct |
42 |
Correct |
48 ms |
7792 KB |
Output is correct |
43 |
Correct |
46 ms |
7792 KB |
Output is correct |
44 |
Correct |
50 ms |
7792 KB |
Output is correct |
45 |
Correct |
45 ms |
7792 KB |
Output is correct |
46 |
Correct |
49 ms |
7824 KB |
Output is correct |
47 |
Correct |
46 ms |
7792 KB |
Output is correct |
48 |
Correct |
51 ms |
7792 KB |
Output is correct |
49 |
Correct |
51 ms |
7920 KB |
Output is correct |
50 |
Correct |
47 ms |
7792 KB |
Output is correct |
51 |
Correct |
474 ms |
49120 KB |
Output is correct |
52 |
Correct |
849 ms |
50128 KB |
Output is correct |
53 |
Correct |
512 ms |
50532 KB |
Output is correct |
54 |
Correct |
51 ms |
7828 KB |
Output is correct |
55 |
Correct |
44 ms |
7792 KB |
Output is correct |
56 |
Correct |
154 ms |
26600 KB |
Output is correct |
57 |
Correct |
1 ms |
384 KB |
Output is correct |
58 |
Correct |
50 ms |
7792 KB |
Output is correct |
59 |
Correct |
51 ms |
7792 KB |
Output is correct |
60 |
Correct |
545 ms |
50636 KB |
Output is correct |
61 |
Correct |
50 ms |
7792 KB |
Output is correct |
62 |
Correct |
50 ms |
7792 KB |
Output is correct |
63 |
Correct |
49 ms |
7792 KB |
Output is correct |
64 |
Correct |
52 ms |
7792 KB |
Output is correct |
65 |
Correct |
50 ms |
7792 KB |
Output is correct |
66 |
Correct |
50 ms |
7792 KB |
Output is correct |
67 |
Correct |
50 ms |
7792 KB |
Output is correct |
68 |
Correct |
44 ms |
7792 KB |
Output is correct |
69 |
Correct |
50 ms |
7792 KB |
Output is correct |
70 |
Correct |
517 ms |
41604 KB |
Output is correct |
71 |
Correct |
52 ms |
7924 KB |
Output is correct |
72 |
Correct |
481 ms |
69732 KB |
Output is correct |
73 |
Correct |
457 ms |
37728 KB |
Output is correct |
74 |
Correct |
1 ms |
384 KB |
Output is correct |
75 |
Correct |
0 ms |
384 KB |
Output is correct |
76 |
Correct |
1 ms |
384 KB |
Output is correct |
77 |
Correct |
1 ms |
384 KB |
Output is correct |
78 |
Correct |
1 ms |
384 KB |
Output is correct |
79 |
Correct |
5 ms |
1280 KB |
Output is correct |
80 |
Correct |
546 ms |
39732 KB |
Output is correct |
81 |
Correct |
549 ms |
39652 KB |
Output is correct |
82 |
Correct |
513 ms |
51300 KB |
Output is correct |
83 |
Correct |
501 ms |
37732 KB |
Output is correct |
84 |
Correct |
505 ms |
42852 KB |
Output is correct |
85 |
Correct |
505 ms |
42852 KB |
Output is correct |
86 |
Correct |
144 ms |
26476 KB |
Output is correct |
87 |
Correct |
1 ms |
384 KB |
Output is correct |