#include <bits/stdc++.h>
#define int long long
#define fi first
#define se second
using namespace std;
const int INFF = 2e18;
int32_t main()
{
ios_base::sync_with_stdio(false);
cin.tie(NULL);
int n, a, b;
cin >> n >> a >> b;
int len = lcm(a, b + 1) / (b + 1) * b;
set<pair<int, int>> seg;
auto insert = [&](int l, int r) {
auto it = seg.lower_bound({l, 0});
if (!seg.empty() && it != seg.begin()) --it;
int mnl = l, mxr = r;
vector<pair<int, int>> del;
for (; it != seg.end(); it++) {
if (it->fi > r) break;
if (it->fi < l && it->se >= l) {
del.push_back(*it);
mnl = min(mnl, it->fi);
mxr = max(mxr, it->se);
}
if (it->fi >= l && it->fi <= r) {
del.push_back(*it);
mnl = min(mnl, it->fi);
mxr = max(mxr, it->se);
}
}
for (auto p : del) seg.erase(p);
seg.insert({mnl, mxr});
};
for (int i = 0; i < n; i++) {
int l, r;
cin >> l >> r;
if (a <= INFF / b && r - l + 1 >= len) {
cout << len << '\n';
return 0;
}
if (a <= INFF / b) {
l %= len;
r %= len;
}
if (l <= r) {
insert(l, r);
} else {
assert(a <= INFF / b);
insert(l, len - 1);
insert(0, r);
}
}
int ans = 0;
for (auto [l, r] : seg) ans += r - l + 1;
cout << ans << '\n';
return 0;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
344 KB |
Output is correct |
2 |
Correct |
5 ms |
1372 KB |
Output is correct |
3 |
Correct |
4 ms |
1360 KB |
Output is correct |
4 |
Correct |
0 ms |
348 KB |
Output is correct |
5 |
Correct |
0 ms |
348 KB |
Output is correct |
6 |
Correct |
0 ms |
348 KB |
Output is correct |
7 |
Correct |
0 ms |
348 KB |
Output is correct |
8 |
Correct |
0 ms |
348 KB |
Output is correct |
9 |
Correct |
0 ms |
348 KB |
Output is correct |
10 |
Correct |
0 ms |
348 KB |
Output is correct |
11 |
Correct |
0 ms |
348 KB |
Output is correct |
12 |
Correct |
1 ms |
348 KB |
Output is correct |
13 |
Correct |
0 ms |
348 KB |
Output is correct |
14 |
Correct |
0 ms |
348 KB |
Output is correct |
15 |
Correct |
1 ms |
344 KB |
Output is correct |
16 |
Correct |
4 ms |
1372 KB |
Output is correct |
17 |
Correct |
51 ms |
10348 KB |
Output is correct |
18 |
Correct |
0 ms |
348 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
348 KB |
Output is correct |
2 |
Correct |
0 ms |
348 KB |
Output is correct |
3 |
Correct |
0 ms |
348 KB |
Output is correct |
4 |
Correct |
0 ms |
348 KB |
Output is correct |
5 |
Correct |
0 ms |
348 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
348 KB |
Output is correct |
2 |
Correct |
1 ms |
348 KB |
Output is correct |
3 |
Correct |
1 ms |
348 KB |
Output is correct |
4 |
Correct |
1 ms |
348 KB |
Output is correct |
5 |
Correct |
200 ms |
25524 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
348 KB |
Output is correct |
2 |
Correct |
495 ms |
100112 KB |
Output is correct |
3 |
Correct |
517 ms |
100224 KB |
Output is correct |
4 |
Correct |
600 ms |
100344 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
348 KB |
Output is correct |
2 |
Correct |
495 ms |
100112 KB |
Output is correct |
3 |
Correct |
517 ms |
100224 KB |
Output is correct |
4 |
Correct |
600 ms |
100344 KB |
Output is correct |
5 |
Correct |
0 ms |
348 KB |
Output is correct |
6 |
Correct |
547 ms |
100068 KB |
Output is correct |
7 |
Correct |
550 ms |
100200 KB |
Output is correct |
8 |
Correct |
541 ms |
100072 KB |
Output is correct |
9 |
Correct |
562 ms |
100088 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
348 KB |
Output is correct |
2 |
Correct |
495 ms |
100112 KB |
Output is correct |
3 |
Correct |
517 ms |
100224 KB |
Output is correct |
4 |
Correct |
600 ms |
100344 KB |
Output is correct |
5 |
Correct |
0 ms |
348 KB |
Output is correct |
6 |
Correct |
40 ms |
10380 KB |
Output is correct |
7 |
Correct |
44 ms |
10356 KB |
Output is correct |
8 |
Correct |
42 ms |
10340 KB |
Output is correct |
9 |
Correct |
46 ms |
10324 KB |
Output is correct |
10 |
Correct |
39 ms |
10352 KB |
Output is correct |
11 |
Correct |
39 ms |
10324 KB |
Output is correct |
12 |
Correct |
44 ms |
10284 KB |
Output is correct |
13 |
Correct |
46 ms |
10320 KB |
Output is correct |
14 |
Correct |
42 ms |
10320 KB |
Output is correct |
15 |
Correct |
53 ms |
10328 KB |
Output is correct |
16 |
Correct |
53 ms |
10380 KB |
Output is correct |
17 |
Correct |
47 ms |
10276 KB |
Output is correct |
18 |
Correct |
498 ms |
100180 KB |
Output is correct |
19 |
Correct |
520 ms |
100148 KB |
Output is correct |
20 |
Correct |
555 ms |
100176 KB |
Output is correct |
21 |
Correct |
57 ms |
10376 KB |
Output is correct |
22 |
Correct |
45 ms |
10324 KB |
Output is correct |
23 |
Correct |
93 ms |
12980 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
344 KB |
Output is correct |
2 |
Correct |
48 ms |
10200 KB |
Output is correct |
3 |
Correct |
57 ms |
10192 KB |
Output is correct |
4 |
Correct |
567 ms |
100160 KB |
Output is correct |
5 |
Correct |
58 ms |
10264 KB |
Output is correct |
6 |
Correct |
65 ms |
10320 KB |
Output is correct |
7 |
Correct |
61 ms |
10364 KB |
Output is correct |
8 |
Correct |
56 ms |
10324 KB |
Output is correct |
9 |
Correct |
49 ms |
10304 KB |
Output is correct |
10 |
Correct |
42 ms |
10320 KB |
Output is correct |
11 |
Correct |
55 ms |
10320 KB |
Output is correct |
12 |
Correct |
46 ms |
10320 KB |
Output is correct |
13 |
Correct |
49 ms |
10188 KB |
Output is correct |
14 |
Correct |
620 ms |
100076 KB |
Output is correct |
15 |
Correct |
47 ms |
9748 KB |
Output is correct |
16 |
Correct |
463 ms |
100072 KB |
Output is correct |
17 |
Correct |
441 ms |
100084 KB |
Output is correct |
18 |
Correct |
0 ms |
348 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
344 KB |
Output is correct |
2 |
Correct |
5 ms |
1372 KB |
Output is correct |
3 |
Correct |
4 ms |
1360 KB |
Output is correct |
4 |
Correct |
0 ms |
348 KB |
Output is correct |
5 |
Correct |
0 ms |
348 KB |
Output is correct |
6 |
Correct |
0 ms |
348 KB |
Output is correct |
7 |
Correct |
0 ms |
348 KB |
Output is correct |
8 |
Correct |
0 ms |
348 KB |
Output is correct |
9 |
Correct |
0 ms |
348 KB |
Output is correct |
10 |
Correct |
0 ms |
348 KB |
Output is correct |
11 |
Correct |
0 ms |
348 KB |
Output is correct |
12 |
Correct |
1 ms |
348 KB |
Output is correct |
13 |
Correct |
0 ms |
348 KB |
Output is correct |
14 |
Correct |
0 ms |
348 KB |
Output is correct |
15 |
Correct |
1 ms |
344 KB |
Output is correct |
16 |
Correct |
4 ms |
1372 KB |
Output is correct |
17 |
Correct |
51 ms |
10348 KB |
Output is correct |
18 |
Correct |
0 ms |
348 KB |
Output is correct |
19 |
Correct |
0 ms |
348 KB |
Output is correct |
20 |
Correct |
0 ms |
348 KB |
Output is correct |
21 |
Correct |
0 ms |
348 KB |
Output is correct |
22 |
Correct |
0 ms |
348 KB |
Output is correct |
23 |
Correct |
0 ms |
348 KB |
Output is correct |
24 |
Correct |
1 ms |
348 KB |
Output is correct |
25 |
Correct |
1 ms |
348 KB |
Output is correct |
26 |
Correct |
1 ms |
348 KB |
Output is correct |
27 |
Correct |
1 ms |
348 KB |
Output is correct |
28 |
Correct |
200 ms |
25524 KB |
Output is correct |
29 |
Correct |
0 ms |
348 KB |
Output is correct |
30 |
Correct |
495 ms |
100112 KB |
Output is correct |
31 |
Correct |
517 ms |
100224 KB |
Output is correct |
32 |
Correct |
600 ms |
100344 KB |
Output is correct |
33 |
Correct |
0 ms |
348 KB |
Output is correct |
34 |
Correct |
547 ms |
100068 KB |
Output is correct |
35 |
Correct |
550 ms |
100200 KB |
Output is correct |
36 |
Correct |
541 ms |
100072 KB |
Output is correct |
37 |
Correct |
562 ms |
100088 KB |
Output is correct |
38 |
Correct |
0 ms |
348 KB |
Output is correct |
39 |
Correct |
40 ms |
10380 KB |
Output is correct |
40 |
Correct |
44 ms |
10356 KB |
Output is correct |
41 |
Correct |
42 ms |
10340 KB |
Output is correct |
42 |
Correct |
46 ms |
10324 KB |
Output is correct |
43 |
Correct |
39 ms |
10352 KB |
Output is correct |
44 |
Correct |
39 ms |
10324 KB |
Output is correct |
45 |
Correct |
44 ms |
10284 KB |
Output is correct |
46 |
Correct |
46 ms |
10320 KB |
Output is correct |
47 |
Correct |
42 ms |
10320 KB |
Output is correct |
48 |
Correct |
53 ms |
10328 KB |
Output is correct |
49 |
Correct |
53 ms |
10380 KB |
Output is correct |
50 |
Correct |
47 ms |
10276 KB |
Output is correct |
51 |
Correct |
498 ms |
100180 KB |
Output is correct |
52 |
Correct |
520 ms |
100148 KB |
Output is correct |
53 |
Correct |
555 ms |
100176 KB |
Output is correct |
54 |
Correct |
57 ms |
10376 KB |
Output is correct |
55 |
Correct |
45 ms |
10324 KB |
Output is correct |
56 |
Correct |
93 ms |
12980 KB |
Output is correct |
57 |
Correct |
0 ms |
344 KB |
Output is correct |
58 |
Correct |
48 ms |
10200 KB |
Output is correct |
59 |
Correct |
57 ms |
10192 KB |
Output is correct |
60 |
Correct |
567 ms |
100160 KB |
Output is correct |
61 |
Correct |
58 ms |
10264 KB |
Output is correct |
62 |
Correct |
65 ms |
10320 KB |
Output is correct |
63 |
Correct |
61 ms |
10364 KB |
Output is correct |
64 |
Correct |
56 ms |
10324 KB |
Output is correct |
65 |
Correct |
49 ms |
10304 KB |
Output is correct |
66 |
Correct |
42 ms |
10320 KB |
Output is correct |
67 |
Correct |
55 ms |
10320 KB |
Output is correct |
68 |
Correct |
46 ms |
10320 KB |
Output is correct |
69 |
Correct |
49 ms |
10188 KB |
Output is correct |
70 |
Correct |
620 ms |
100076 KB |
Output is correct |
71 |
Correct |
47 ms |
9748 KB |
Output is correct |
72 |
Correct |
463 ms |
100072 KB |
Output is correct |
73 |
Correct |
441 ms |
100084 KB |
Output is correct |
74 |
Correct |
0 ms |
348 KB |
Output is correct |
75 |
Correct |
0 ms |
348 KB |
Output is correct |
76 |
Correct |
0 ms |
344 KB |
Output is correct |
77 |
Correct |
0 ms |
348 KB |
Output is correct |
78 |
Correct |
0 ms |
348 KB |
Output is correct |
79 |
Correct |
6 ms |
1372 KB |
Output is correct |
80 |
Correct |
568 ms |
100076 KB |
Output is correct |
81 |
Correct |
542 ms |
100180 KB |
Output is correct |
82 |
Correct |
611 ms |
100128 KB |
Output is correct |
83 |
Correct |
584 ms |
100080 KB |
Output is correct |
84 |
Correct |
669 ms |
100028 KB |
Output is correct |
85 |
Correct |
560 ms |
100180 KB |
Output is correct |
86 |
Correct |
100 ms |
13096 KB |
Output is correct |
87 |
Correct |
0 ms |
348 KB |
Output is correct |