#include<bits/stdc++.h>
using namespace std;
using ll = long long;
using ld = long double;
const ll big = 1e18;
ll cal(ll a, ll b){
__int128 g = gcd(a,b+1);
__int128 x=a,y=b+1,w=b,z,lim = 2e18;
z = x/g*w;
if (z>lim) return lim;
else return z;
}
int main(){
ios::sync_with_stdio(0);cin.tie(0);
ll n,a,b;
cin >> n >> a >> b;
ll m = cal(a,b);
//cout << m << "\n";
vector<pair<ll,ll>> v;
while(n--){
ll l,r;
cin >> l >> r;
ll ml = (l+m-1)/m*m;
ll mr = r/m*m;
//cout << l << " " << r << " " << ml << " " << mr << "\n";
if (ml<mr){
v.push_back({0,m-1});
}else if (ml>mr){
v.push_back({l%m,r%m});
}else{
if(l%m)v.push_back({l%m,m-1});
v.push_back({0,r%m});
}
}
sort(v.begin(),v.end());
//cout << "v:\n";for(auto &o : v) cout << o.first << " " << o.second << "\n";
vector<pair<ll,ll>> u;
for(auto &o : v){
if (u.empty())u.push_back(o);
else{
if (u.back().second>=o.first) u.back().second = max(u.back().second,o.second);
else{
u.push_back(o);
}
}
}
//cout << "u:\n";for(auto &o : u) cout << o.first << " " << o.second << "\n";
ll ans = 0;
for(auto &o : u) ans += o.second-o.first+1;
cout << ans << "\n";
}
Compilation message
strange_device.cpp: In function 'll cal(ll, ll)':
strange_device.cpp:8:18: warning: unused variable 'y' [-Wunused-variable]
8 | __int128 x=a,y=b+1,w=b,z,lim = 2e18;
| ^
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
344 KB |
Output is correct |
2 |
Correct |
4 ms |
1244 KB |
Output is correct |
3 |
Correct |
4 ms |
1248 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 |
1 ms |
348 KB |
Output is correct |
8 |
Correct |
0 ms |
348 KB |
Output is correct |
9 |
Correct |
0 ms |
344 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 |
460 KB |
Output is correct |
14 |
Correct |
0 ms |
348 KB |
Output is correct |
15 |
Correct |
1 ms |
348 KB |
Output is correct |
16 |
Correct |
4 ms |
1232 KB |
Output is correct |
17 |
Correct |
38 ms |
8680 KB |
Output is correct |
18 |
Correct |
1 ms |
600 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 |
1 ms |
348 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
348 KB |
Output is correct |
2 |
Correct |
1 ms |
344 KB |
Output is correct |
3 |
Correct |
1 ms |
344 KB |
Output is correct |
4 |
Correct |
1 ms |
348 KB |
Output is correct |
5 |
Correct |
240 ms |
41356 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
348 KB |
Output is correct |
2 |
Correct |
333 ms |
78284 KB |
Output is correct |
3 |
Correct |
315 ms |
78000 KB |
Output is correct |
4 |
Correct |
314 ms |
78832 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
348 KB |
Output is correct |
2 |
Correct |
333 ms |
78284 KB |
Output is correct |
3 |
Correct |
315 ms |
78000 KB |
Output is correct |
4 |
Correct |
314 ms |
78832 KB |
Output is correct |
5 |
Correct |
0 ms |
344 KB |
Output is correct |
6 |
Correct |
322 ms |
79472 KB |
Output is correct |
7 |
Correct |
339 ms |
79284 KB |
Output is correct |
8 |
Correct |
329 ms |
78692 KB |
Output is correct |
9 |
Correct |
342 ms |
79972 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
348 KB |
Output is correct |
2 |
Correct |
333 ms |
78284 KB |
Output is correct |
3 |
Correct |
315 ms |
78000 KB |
Output is correct |
4 |
Correct |
314 ms |
78832 KB |
Output is correct |
5 |
Correct |
0 ms |
348 KB |
Output is correct |
6 |
Correct |
33 ms |
8588 KB |
Output is correct |
7 |
Correct |
35 ms |
8660 KB |
Output is correct |
8 |
Correct |
31 ms |
8676 KB |
Output is correct |
9 |
Correct |
32 ms |
8652 KB |
Output is correct |
10 |
Correct |
32 ms |
8648 KB |
Output is correct |
11 |
Correct |
33 ms |
8728 KB |
Output is correct |
12 |
Correct |
31 ms |
8652 KB |
Output is correct |
13 |
Correct |
37 ms |
8652 KB |
Output is correct |
14 |
Correct |
32 ms |
8648 KB |
Output is correct |
15 |
Correct |
45 ms |
8752 KB |
Output is correct |
16 |
Correct |
38 ms |
8676 KB |
Output is correct |
17 |
Correct |
37 ms |
8712 KB |
Output is correct |
18 |
Correct |
330 ms |
79504 KB |
Output is correct |
19 |
Correct |
318 ms |
78760 KB |
Output is correct |
20 |
Correct |
382 ms |
78564 KB |
Output is correct |
21 |
Correct |
38 ms |
8648 KB |
Output is correct |
22 |
Correct |
31 ms |
8616 KB |
Output is correct |
23 |
Correct |
117 ms |
20168 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
348 KB |
Output is correct |
2 |
Correct |
36 ms |
8684 KB |
Output is correct |
3 |
Correct |
39 ms |
8676 KB |
Output is correct |
4 |
Correct |
396 ms |
78512 KB |
Output is correct |
5 |
Correct |
34 ms |
8652 KB |
Output is correct |
6 |
Correct |
50 ms |
8848 KB |
Output is correct |
7 |
Correct |
34 ms |
8736 KB |
Output is correct |
8 |
Correct |
38 ms |
8668 KB |
Output is correct |
9 |
Correct |
38 ms |
8784 KB |
Output is correct |
10 |
Correct |
40 ms |
8676 KB |
Output is correct |
11 |
Correct |
38 ms |
8652 KB |
Output is correct |
12 |
Correct |
29 ms |
8732 KB |
Output is correct |
13 |
Correct |
35 ms |
8576 KB |
Output is correct |
14 |
Correct |
368 ms |
79028 KB |
Output is correct |
15 |
Correct |
35 ms |
8648 KB |
Output is correct |
16 |
Correct |
352 ms |
78088 KB |
Output is correct |
17 |
Correct |
342 ms |
79764 KB |
Output is correct |
18 |
Correct |
1 ms |
344 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
344 KB |
Output is correct |
2 |
Correct |
4 ms |
1244 KB |
Output is correct |
3 |
Correct |
4 ms |
1248 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 |
1 ms |
348 KB |
Output is correct |
8 |
Correct |
0 ms |
348 KB |
Output is correct |
9 |
Correct |
0 ms |
344 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 |
460 KB |
Output is correct |
14 |
Correct |
0 ms |
348 KB |
Output is correct |
15 |
Correct |
1 ms |
348 KB |
Output is correct |
16 |
Correct |
4 ms |
1232 KB |
Output is correct |
17 |
Correct |
38 ms |
8680 KB |
Output is correct |
18 |
Correct |
1 ms |
600 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 |
1 ms |
348 KB |
Output is correct |
24 |
Correct |
0 ms |
348 KB |
Output is correct |
25 |
Correct |
1 ms |
344 KB |
Output is correct |
26 |
Correct |
1 ms |
344 KB |
Output is correct |
27 |
Correct |
1 ms |
348 KB |
Output is correct |
28 |
Correct |
240 ms |
41356 KB |
Output is correct |
29 |
Correct |
1 ms |
348 KB |
Output is correct |
30 |
Correct |
333 ms |
78284 KB |
Output is correct |
31 |
Correct |
315 ms |
78000 KB |
Output is correct |
32 |
Correct |
314 ms |
78832 KB |
Output is correct |
33 |
Correct |
0 ms |
344 KB |
Output is correct |
34 |
Correct |
322 ms |
79472 KB |
Output is correct |
35 |
Correct |
339 ms |
79284 KB |
Output is correct |
36 |
Correct |
329 ms |
78692 KB |
Output is correct |
37 |
Correct |
342 ms |
79972 KB |
Output is correct |
38 |
Correct |
0 ms |
348 KB |
Output is correct |
39 |
Correct |
33 ms |
8588 KB |
Output is correct |
40 |
Correct |
35 ms |
8660 KB |
Output is correct |
41 |
Correct |
31 ms |
8676 KB |
Output is correct |
42 |
Correct |
32 ms |
8652 KB |
Output is correct |
43 |
Correct |
32 ms |
8648 KB |
Output is correct |
44 |
Correct |
33 ms |
8728 KB |
Output is correct |
45 |
Correct |
31 ms |
8652 KB |
Output is correct |
46 |
Correct |
37 ms |
8652 KB |
Output is correct |
47 |
Correct |
32 ms |
8648 KB |
Output is correct |
48 |
Correct |
45 ms |
8752 KB |
Output is correct |
49 |
Correct |
38 ms |
8676 KB |
Output is correct |
50 |
Correct |
37 ms |
8712 KB |
Output is correct |
51 |
Correct |
330 ms |
79504 KB |
Output is correct |
52 |
Correct |
318 ms |
78760 KB |
Output is correct |
53 |
Correct |
382 ms |
78564 KB |
Output is correct |
54 |
Correct |
38 ms |
8648 KB |
Output is correct |
55 |
Correct |
31 ms |
8616 KB |
Output is correct |
56 |
Correct |
117 ms |
20168 KB |
Output is correct |
57 |
Correct |
0 ms |
348 KB |
Output is correct |
58 |
Correct |
36 ms |
8684 KB |
Output is correct |
59 |
Correct |
39 ms |
8676 KB |
Output is correct |
60 |
Correct |
396 ms |
78512 KB |
Output is correct |
61 |
Correct |
34 ms |
8652 KB |
Output is correct |
62 |
Correct |
50 ms |
8848 KB |
Output is correct |
63 |
Correct |
34 ms |
8736 KB |
Output is correct |
64 |
Correct |
38 ms |
8668 KB |
Output is correct |
65 |
Correct |
38 ms |
8784 KB |
Output is correct |
66 |
Correct |
40 ms |
8676 KB |
Output is correct |
67 |
Correct |
38 ms |
8652 KB |
Output is correct |
68 |
Correct |
29 ms |
8732 KB |
Output is correct |
69 |
Correct |
35 ms |
8576 KB |
Output is correct |
70 |
Correct |
368 ms |
79028 KB |
Output is correct |
71 |
Correct |
35 ms |
8648 KB |
Output is correct |
72 |
Correct |
352 ms |
78088 KB |
Output is correct |
73 |
Correct |
342 ms |
79764 KB |
Output is correct |
74 |
Correct |
1 ms |
344 KB |
Output is correct |
75 |
Correct |
0 ms |
348 KB |
Output is correct |
76 |
Correct |
0 ms |
348 KB |
Output is correct |
77 |
Correct |
0 ms |
348 KB |
Output is correct |
78 |
Correct |
1 ms |
348 KB |
Output is correct |
79 |
Correct |
4 ms |
1248 KB |
Output is correct |
80 |
Correct |
387 ms |
77928 KB |
Output is correct |
81 |
Correct |
387 ms |
78744 KB |
Output is correct |
82 |
Correct |
367 ms |
78536 KB |
Output is correct |
83 |
Correct |
356 ms |
79480 KB |
Output is correct |
84 |
Correct |
361 ms |
80620 KB |
Output is correct |
85 |
Correct |
345 ms |
78032 KB |
Output is correct |
86 |
Correct |
97 ms |
20416 KB |
Output is correct |
87 |
Correct |
1 ms |
344 KB |
Output is correct |