#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
int main() {
ios_base::sync_with_stdio(false);
cin.tie(0);
cout.tie(0);
ll n,a,b;
cin>>n>>a>>b;
ll len=0;
vector<pair<ll,ll>> lst(n);
for(int i=0;i<n;++i) {
cin>>lst[i].first>>lst[i].second;
len+=lst[i].second-lst[i].first+1;
}
ll div=__gcd(a,b+1);
__int128 A=a/div;
__int128 B=b;
if(A*B>__int128(1000000000000000000LL)) {
cout<<len<<"\n";
return 0;
}
ll mod=(a/div)*b;
vector<pair<ll,ll>> ivs;
for(auto i:lst) {
ll div1=i.first/mod, div2=i.second/mod;
ll mod1=i.first%mod, mod2=i.second%mod;
if(mod1<=mod2) {
if(div1<div2) {
cout<<mod<<"\n";
return 0;
}
ivs.push_back({mod1,mod2});
}else {
if(div1+1==div2) {
ivs.push_back({mod1, mod-1});
ivs.push_back({0,mod2});
}else {
cout<<mod<<"\n";
return 0;
}
}
}
sort(ivs.begin(), ivs.end());
ll last=-1;
ll ans=0;
for(auto i:ivs) {
if(last<i.second) {
ans+=i.second-max(last+1, i.first)+1;
}
last=max(last, i.second);
}
cout<<ans<<"\n";
return 0;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
5 ms |
376 KB |
Output is correct |
2 |
Correct |
13 ms |
1272 KB |
Output is correct |
3 |
Correct |
10 ms |
1272 KB |
Output is correct |
4 |
Correct |
5 ms |
376 KB |
Output is correct |
5 |
Correct |
5 ms |
376 KB |
Output is correct |
6 |
Correct |
5 ms |
376 KB |
Output is correct |
7 |
Correct |
5 ms |
376 KB |
Output is correct |
8 |
Correct |
5 ms |
376 KB |
Output is correct |
9 |
Correct |
5 ms |
376 KB |
Output is correct |
10 |
Correct |
5 ms |
376 KB |
Output is correct |
11 |
Correct |
5 ms |
376 KB |
Output is correct |
12 |
Correct |
5 ms |
376 KB |
Output is correct |
13 |
Correct |
5 ms |
376 KB |
Output is correct |
14 |
Correct |
5 ms |
376 KB |
Output is correct |
15 |
Correct |
5 ms |
504 KB |
Output is correct |
16 |
Correct |
10 ms |
1272 KB |
Output is correct |
17 |
Correct |
64 ms |
7536 KB |
Output is correct |
18 |
Correct |
5 ms |
376 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
5 ms |
376 KB |
Output is correct |
2 |
Correct |
5 ms |
376 KB |
Output is correct |
3 |
Correct |
5 ms |
376 KB |
Output is correct |
4 |
Correct |
5 ms |
376 KB |
Output is correct |
5 |
Correct |
5 ms |
376 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
5 ms |
376 KB |
Output is correct |
2 |
Correct |
6 ms |
376 KB |
Output is correct |
3 |
Correct |
5 ms |
376 KB |
Output is correct |
4 |
Correct |
6 ms |
376 KB |
Output is correct |
5 |
Correct |
407 ms |
34796 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
5 ms |
376 KB |
Output is correct |
2 |
Correct |
554 ms |
35928 KB |
Output is correct |
3 |
Correct |
553 ms |
36060 KB |
Output is correct |
4 |
Correct |
518 ms |
34648 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
5 ms |
376 KB |
Output is correct |
2 |
Correct |
554 ms |
35928 KB |
Output is correct |
3 |
Correct |
553 ms |
36060 KB |
Output is correct |
4 |
Correct |
518 ms |
34648 KB |
Output is correct |
5 |
Correct |
5 ms |
376 KB |
Output is correct |
6 |
Correct |
560 ms |
34660 KB |
Output is correct |
7 |
Correct |
577 ms |
34744 KB |
Output is correct |
8 |
Correct |
553 ms |
34776 KB |
Output is correct |
9 |
Correct |
583 ms |
34648 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
5 ms |
376 KB |
Output is correct |
2 |
Correct |
554 ms |
35928 KB |
Output is correct |
3 |
Correct |
553 ms |
36060 KB |
Output is correct |
4 |
Correct |
518 ms |
34648 KB |
Output is correct |
5 |
Correct |
5 ms |
376 KB |
Output is correct |
6 |
Correct |
62 ms |
7536 KB |
Output is correct |
7 |
Correct |
61 ms |
7536 KB |
Output is correct |
8 |
Correct |
57 ms |
7536 KB |
Output is correct |
9 |
Correct |
58 ms |
7536 KB |
Output is correct |
10 |
Correct |
63 ms |
7536 KB |
Output is correct |
11 |
Correct |
63 ms |
7532 KB |
Output is correct |
12 |
Correct |
58 ms |
7536 KB |
Output is correct |
13 |
Correct |
63 ms |
7536 KB |
Output is correct |
14 |
Correct |
58 ms |
7536 KB |
Output is correct |
15 |
Correct |
66 ms |
7536 KB |
Output is correct |
16 |
Correct |
64 ms |
7536 KB |
Output is correct |
17 |
Correct |
59 ms |
7664 KB |
Output is correct |
18 |
Correct |
547 ms |
34776 KB |
Output is correct |
19 |
Correct |
546 ms |
34648 KB |
Output is correct |
20 |
Correct |
613 ms |
34772 KB |
Output is correct |
21 |
Correct |
67 ms |
7540 KB |
Output is correct |
22 |
Correct |
56 ms |
7664 KB |
Output is correct |
23 |
Correct |
174 ms |
17380 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
5 ms |
376 KB |
Output is correct |
2 |
Correct |
63 ms |
7536 KB |
Output is correct |
3 |
Correct |
65 ms |
7536 KB |
Output is correct |
4 |
Correct |
638 ms |
34524 KB |
Output is correct |
5 |
Correct |
65 ms |
7280 KB |
Output is correct |
6 |
Correct |
63 ms |
7408 KB |
Output is correct |
7 |
Correct |
64 ms |
7280 KB |
Output is correct |
8 |
Correct |
62 ms |
7280 KB |
Output is correct |
9 |
Correct |
61 ms |
7280 KB |
Output is correct |
10 |
Correct |
63 ms |
7280 KB |
Output is correct |
11 |
Correct |
116 ms |
7152 KB |
Output is correct |
12 |
Correct |
58 ms |
7152 KB |
Output is correct |
13 |
Correct |
61 ms |
7148 KB |
Output is correct |
14 |
Correct |
593 ms |
34136 KB |
Output is correct |
15 |
Correct |
63 ms |
6896 KB |
Output is correct |
16 |
Correct |
562 ms |
33880 KB |
Output is correct |
17 |
Correct |
546 ms |
33756 KB |
Output is correct |
18 |
Correct |
5 ms |
376 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
5 ms |
376 KB |
Output is correct |
2 |
Correct |
13 ms |
1272 KB |
Output is correct |
3 |
Correct |
10 ms |
1272 KB |
Output is correct |
4 |
Correct |
5 ms |
376 KB |
Output is correct |
5 |
Correct |
5 ms |
376 KB |
Output is correct |
6 |
Correct |
5 ms |
376 KB |
Output is correct |
7 |
Correct |
5 ms |
376 KB |
Output is correct |
8 |
Correct |
5 ms |
376 KB |
Output is correct |
9 |
Correct |
5 ms |
376 KB |
Output is correct |
10 |
Correct |
5 ms |
376 KB |
Output is correct |
11 |
Correct |
5 ms |
376 KB |
Output is correct |
12 |
Correct |
5 ms |
376 KB |
Output is correct |
13 |
Correct |
5 ms |
376 KB |
Output is correct |
14 |
Correct |
5 ms |
376 KB |
Output is correct |
15 |
Correct |
5 ms |
504 KB |
Output is correct |
16 |
Correct |
10 ms |
1272 KB |
Output is correct |
17 |
Correct |
64 ms |
7536 KB |
Output is correct |
18 |
Correct |
5 ms |
376 KB |
Output is correct |
19 |
Correct |
5 ms |
376 KB |
Output is correct |
20 |
Correct |
5 ms |
376 KB |
Output is correct |
21 |
Correct |
5 ms |
376 KB |
Output is correct |
22 |
Correct |
5 ms |
376 KB |
Output is correct |
23 |
Correct |
5 ms |
376 KB |
Output is correct |
24 |
Correct |
5 ms |
376 KB |
Output is correct |
25 |
Correct |
6 ms |
376 KB |
Output is correct |
26 |
Correct |
5 ms |
376 KB |
Output is correct |
27 |
Correct |
6 ms |
376 KB |
Output is correct |
28 |
Correct |
407 ms |
34796 KB |
Output is correct |
29 |
Correct |
5 ms |
376 KB |
Output is correct |
30 |
Correct |
554 ms |
35928 KB |
Output is correct |
31 |
Correct |
553 ms |
36060 KB |
Output is correct |
32 |
Correct |
518 ms |
34648 KB |
Output is correct |
33 |
Correct |
5 ms |
376 KB |
Output is correct |
34 |
Correct |
560 ms |
34660 KB |
Output is correct |
35 |
Correct |
577 ms |
34744 KB |
Output is correct |
36 |
Correct |
553 ms |
34776 KB |
Output is correct |
37 |
Correct |
583 ms |
34648 KB |
Output is correct |
38 |
Correct |
5 ms |
376 KB |
Output is correct |
39 |
Correct |
62 ms |
7536 KB |
Output is correct |
40 |
Correct |
61 ms |
7536 KB |
Output is correct |
41 |
Correct |
57 ms |
7536 KB |
Output is correct |
42 |
Correct |
58 ms |
7536 KB |
Output is correct |
43 |
Correct |
63 ms |
7536 KB |
Output is correct |
44 |
Correct |
63 ms |
7532 KB |
Output is correct |
45 |
Correct |
58 ms |
7536 KB |
Output is correct |
46 |
Correct |
63 ms |
7536 KB |
Output is correct |
47 |
Correct |
58 ms |
7536 KB |
Output is correct |
48 |
Correct |
66 ms |
7536 KB |
Output is correct |
49 |
Correct |
64 ms |
7536 KB |
Output is correct |
50 |
Correct |
59 ms |
7664 KB |
Output is correct |
51 |
Correct |
547 ms |
34776 KB |
Output is correct |
52 |
Correct |
546 ms |
34648 KB |
Output is correct |
53 |
Correct |
613 ms |
34772 KB |
Output is correct |
54 |
Correct |
67 ms |
7540 KB |
Output is correct |
55 |
Correct |
56 ms |
7664 KB |
Output is correct |
56 |
Correct |
174 ms |
17380 KB |
Output is correct |
57 |
Correct |
5 ms |
376 KB |
Output is correct |
58 |
Correct |
63 ms |
7536 KB |
Output is correct |
59 |
Correct |
65 ms |
7536 KB |
Output is correct |
60 |
Correct |
638 ms |
34524 KB |
Output is correct |
61 |
Correct |
65 ms |
7280 KB |
Output is correct |
62 |
Correct |
63 ms |
7408 KB |
Output is correct |
63 |
Correct |
64 ms |
7280 KB |
Output is correct |
64 |
Correct |
62 ms |
7280 KB |
Output is correct |
65 |
Correct |
61 ms |
7280 KB |
Output is correct |
66 |
Correct |
63 ms |
7280 KB |
Output is correct |
67 |
Correct |
116 ms |
7152 KB |
Output is correct |
68 |
Correct |
58 ms |
7152 KB |
Output is correct |
69 |
Correct |
61 ms |
7148 KB |
Output is correct |
70 |
Correct |
593 ms |
34136 KB |
Output is correct |
71 |
Correct |
63 ms |
6896 KB |
Output is correct |
72 |
Correct |
562 ms |
33880 KB |
Output is correct |
73 |
Correct |
546 ms |
33756 KB |
Output is correct |
74 |
Correct |
5 ms |
376 KB |
Output is correct |
75 |
Correct |
5 ms |
376 KB |
Output is correct |
76 |
Correct |
5 ms |
376 KB |
Output is correct |
77 |
Correct |
5 ms |
376 KB |
Output is correct |
78 |
Correct |
5 ms |
376 KB |
Output is correct |
79 |
Correct |
11 ms |
1272 KB |
Output is correct |
80 |
Correct |
646 ms |
33624 KB |
Output is correct |
81 |
Correct |
619 ms |
33496 KB |
Output is correct |
82 |
Correct |
568 ms |
33240 KB |
Output is correct |
83 |
Correct |
588 ms |
33156 KB |
Output is correct |
84 |
Correct |
585 ms |
33112 KB |
Output is correct |
85 |
Correct |
660 ms |
32984 KB |
Output is correct |
86 |
Correct |
169 ms |
14436 KB |
Output is correct |
87 |
Correct |
5 ms |
376 KB |
Output is correct |