#include <bits/stdc++.h>
#define ft first
#define sd second
#define all(x) x.begin(),x.end()
#define sz(x) ((int)x.size())
#define pll pair<ll, ll>
#define MP make_pair
#define PB push_back
using namespace std;
typedef long long ll;
//typedef long long __int128;
vector<pll> vc;
vector<pll> seg;
int n;
ll A, B;
int main(){
#ifdef _LOCAL
freopen("in.txt","r",stdin);
#else
ios_base::sync_with_stdio(0); cin.tie(0);
#endif // _LOCAL
cin >> n >> A >> B;
// ll fi = 1;
//
// while ((fi + fi / B) % A != 0 || fi % B != 0)
// fi++;
//
// cout << fi << '\n';
ll fi = A;
while (fi <= ll(1e18) && fi % (B + 1) > 0)
fi += A;
if (fi <= ll(1e18))
fi -= fi / (B + 1);
// cout << fi << '\n';
seg.clear();
for (int i = 0; i < n; i++){
ll l, r; cin >> l >> r;
if (r - l + 1 >= fi){
seg.PB(MP(0, fi - 1));
continue;
}
ll vl = ((l - 1) / fi) * fi + fi;
if (vl > r){
vl -= fi;
seg.PB(MP(l - vl, r - vl));
} else {
vl -= fi;
seg.PB(MP(l - vl, fi - 1));
vl += fi;
seg.PB(MP(0ll, r - vl));
}
}
sort(all(seg));
ll lst = -1, ans = 0;
for (pll cr : seg)
if (cr.ft > lst){
ans += cr.sd - cr.ft + 1ll;
lst = cr.sd;
} else {
ans += max(lst, cr.sd) - lst;
lst = max(lst, cr.sd);
}
cout << ans << '\n';
return 0;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
4 ms |
384 KB |
Output is correct |
2 |
Correct |
9 ms |
768 KB |
Output is correct |
3 |
Correct |
10 ms |
1152 KB |
Output is correct |
4 |
Correct |
4 ms |
384 KB |
Output is correct |
5 |
Correct |
4 ms |
384 KB |
Output is correct |
6 |
Correct |
4 ms |
384 KB |
Output is correct |
7 |
Correct |
5 ms |
384 KB |
Output is correct |
8 |
Correct |
4 ms |
384 KB |
Output is correct |
9 |
Correct |
5 ms |
384 KB |
Output is correct |
10 |
Correct |
5 ms |
384 KB |
Output is correct |
11 |
Correct |
4 ms |
384 KB |
Output is correct |
12 |
Correct |
4 ms |
384 KB |
Output is correct |
13 |
Correct |
4 ms |
384 KB |
Output is correct |
14 |
Correct |
4 ms |
384 KB |
Output is correct |
15 |
Correct |
4 ms |
384 KB |
Output is correct |
16 |
Correct |
10 ms |
1152 KB |
Output is correct |
17 |
Correct |
59 ms |
5740 KB |
Output is correct |
18 |
Correct |
4 ms |
384 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
4 ms |
384 KB |
Output is correct |
2 |
Correct |
656 ms |
376 KB |
Output is correct |
3 |
Correct |
660 ms |
384 KB |
Output is correct |
4 |
Correct |
4 ms |
384 KB |
Output is correct |
5 |
Correct |
5 ms |
512 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
7 ms |
384 KB |
Output is correct |
2 |
Correct |
5 ms |
384 KB |
Output is correct |
3 |
Correct |
5 ms |
384 KB |
Output is correct |
4 |
Correct |
5 ms |
384 KB |
Output is correct |
5 |
Correct |
430 ms |
33472 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
4 ms |
384 KB |
Output is correct |
2 |
Correct |
492 ms |
16852 KB |
Output is correct |
3 |
Correct |
508 ms |
17236 KB |
Output is correct |
4 |
Correct |
503 ms |
17236 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
4 ms |
384 KB |
Output is correct |
2 |
Correct |
492 ms |
16852 KB |
Output is correct |
3 |
Correct |
508 ms |
17236 KB |
Output is correct |
4 |
Correct |
503 ms |
17236 KB |
Output is correct |
5 |
Correct |
4 ms |
384 KB |
Output is correct |
6 |
Correct |
493 ms |
17240 KB |
Output is correct |
7 |
Correct |
506 ms |
17112 KB |
Output is correct |
8 |
Correct |
506 ms |
17236 KB |
Output is correct |
9 |
Correct |
540 ms |
17092 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
4 ms |
384 KB |
Output is correct |
2 |
Correct |
492 ms |
16852 KB |
Output is correct |
3 |
Correct |
508 ms |
17236 KB |
Output is correct |
4 |
Correct |
503 ms |
17236 KB |
Output is correct |
5 |
Correct |
5 ms |
384 KB |
Output is correct |
6 |
Correct |
51 ms |
2800 KB |
Output is correct |
7 |
Correct |
56 ms |
2808 KB |
Output is correct |
8 |
Correct |
52 ms |
2808 KB |
Output is correct |
9 |
Correct |
55 ms |
2800 KB |
Output is correct |
10 |
Correct |
54 ms |
2804 KB |
Output is correct |
11 |
Correct |
55 ms |
2800 KB |
Output is correct |
12 |
Correct |
52 ms |
2800 KB |
Output is correct |
13 |
Correct |
57 ms |
2796 KB |
Output is correct |
14 |
Correct |
57 ms |
2800 KB |
Output is correct |
15 |
Correct |
58 ms |
2804 KB |
Output is correct |
16 |
Correct |
66 ms |
2800 KB |
Output is correct |
17 |
Correct |
68 ms |
2928 KB |
Output is correct |
18 |
Correct |
519 ms |
17236 KB |
Output is correct |
19 |
Correct |
504 ms |
17232 KB |
Output is correct |
20 |
Correct |
556 ms |
17236 KB |
Output is correct |
21 |
Correct |
58 ms |
2800 KB |
Output is correct |
22 |
Correct |
51 ms |
2808 KB |
Output is correct |
23 |
Correct |
182 ms |
17492 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
4 ms |
384 KB |
Output is correct |
2 |
Correct |
58 ms |
2544 KB |
Output is correct |
3 |
Correct |
82 ms |
2800 KB |
Output is correct |
4 |
Correct |
595 ms |
16932 KB |
Output is correct |
5 |
Execution timed out |
5071 ms |
384 KB |
Time limit exceeded |
6 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
4 ms |
384 KB |
Output is correct |
2 |
Correct |
9 ms |
768 KB |
Output is correct |
3 |
Correct |
10 ms |
1152 KB |
Output is correct |
4 |
Correct |
4 ms |
384 KB |
Output is correct |
5 |
Correct |
4 ms |
384 KB |
Output is correct |
6 |
Correct |
4 ms |
384 KB |
Output is correct |
7 |
Correct |
5 ms |
384 KB |
Output is correct |
8 |
Correct |
4 ms |
384 KB |
Output is correct |
9 |
Correct |
5 ms |
384 KB |
Output is correct |
10 |
Correct |
5 ms |
384 KB |
Output is correct |
11 |
Correct |
4 ms |
384 KB |
Output is correct |
12 |
Correct |
4 ms |
384 KB |
Output is correct |
13 |
Correct |
4 ms |
384 KB |
Output is correct |
14 |
Correct |
4 ms |
384 KB |
Output is correct |
15 |
Correct |
4 ms |
384 KB |
Output is correct |
16 |
Correct |
10 ms |
1152 KB |
Output is correct |
17 |
Correct |
59 ms |
5740 KB |
Output is correct |
18 |
Correct |
4 ms |
384 KB |
Output is correct |
19 |
Correct |
4 ms |
384 KB |
Output is correct |
20 |
Correct |
656 ms |
376 KB |
Output is correct |
21 |
Correct |
660 ms |
384 KB |
Output is correct |
22 |
Correct |
4 ms |
384 KB |
Output is correct |
23 |
Correct |
5 ms |
512 KB |
Output is correct |
24 |
Correct |
7 ms |
384 KB |
Output is correct |
25 |
Correct |
5 ms |
384 KB |
Output is correct |
26 |
Correct |
5 ms |
384 KB |
Output is correct |
27 |
Correct |
5 ms |
384 KB |
Output is correct |
28 |
Correct |
430 ms |
33472 KB |
Output is correct |
29 |
Correct |
4 ms |
384 KB |
Output is correct |
30 |
Correct |
492 ms |
16852 KB |
Output is correct |
31 |
Correct |
508 ms |
17236 KB |
Output is correct |
32 |
Correct |
503 ms |
17236 KB |
Output is correct |
33 |
Correct |
4 ms |
384 KB |
Output is correct |
34 |
Correct |
493 ms |
17240 KB |
Output is correct |
35 |
Correct |
506 ms |
17112 KB |
Output is correct |
36 |
Correct |
506 ms |
17236 KB |
Output is correct |
37 |
Correct |
540 ms |
17092 KB |
Output is correct |
38 |
Correct |
5 ms |
384 KB |
Output is correct |
39 |
Correct |
51 ms |
2800 KB |
Output is correct |
40 |
Correct |
56 ms |
2808 KB |
Output is correct |
41 |
Correct |
52 ms |
2808 KB |
Output is correct |
42 |
Correct |
55 ms |
2800 KB |
Output is correct |
43 |
Correct |
54 ms |
2804 KB |
Output is correct |
44 |
Correct |
55 ms |
2800 KB |
Output is correct |
45 |
Correct |
52 ms |
2800 KB |
Output is correct |
46 |
Correct |
57 ms |
2796 KB |
Output is correct |
47 |
Correct |
57 ms |
2800 KB |
Output is correct |
48 |
Correct |
58 ms |
2804 KB |
Output is correct |
49 |
Correct |
66 ms |
2800 KB |
Output is correct |
50 |
Correct |
68 ms |
2928 KB |
Output is correct |
51 |
Correct |
519 ms |
17236 KB |
Output is correct |
52 |
Correct |
504 ms |
17232 KB |
Output is correct |
53 |
Correct |
556 ms |
17236 KB |
Output is correct |
54 |
Correct |
58 ms |
2800 KB |
Output is correct |
55 |
Correct |
51 ms |
2808 KB |
Output is correct |
56 |
Correct |
182 ms |
17492 KB |
Output is correct |
57 |
Correct |
4 ms |
384 KB |
Output is correct |
58 |
Correct |
58 ms |
2544 KB |
Output is correct |
59 |
Correct |
82 ms |
2800 KB |
Output is correct |
60 |
Correct |
595 ms |
16932 KB |
Output is correct |
61 |
Execution timed out |
5071 ms |
384 KB |
Time limit exceeded |
62 |
Halted |
0 ms |
0 KB |
- |