#include<bits/stdc++.h>
using namespace std;
#define ll long long
#define pb push_back
#define ff first
#define ss second
#define all(s) s.begin(),s.end()
#define rall(s) s.rbegin(),s.rend()
int main(){
ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0);
ll n,a,b;
cin>>n>>a>>b;
ll l[n+5],r[n+5];
ll g=a/gcd((b+1)%a,a),MX=1e18+1;
if(MX/b>=g){
g=g*b;
}
else{
g=MX;
}
for(ll i=1;i<=n;i++){
cin>>l[i]>>r[i];
}
vector<pair<ll,ll>>v;
for(ll i=1;i<=n;i++){
if(r[i]-l[i]+1>=g){
cout<<g;
return 0;
}
ll L=l[i]%g,R=r[i]%g;
if(L<=R){
v.pb({L,R});
}
else{
v.pb({0,R});
v.pb({L,g-1});
}
}
sort(all(v));
ll ans=0;
for(ll i=0;i<v.size();){
ll nxt=i,curR=v[i].ss;
while(nxt+1<v.size()&&v[nxt+1].ff<=curR){
nxt++;
curR=max(curR,v[nxt].ss);
}
ans+=curR-v[i].ff+1;
i=nxt+1;
}
cout<<ans;
}
Compilation message
strange_device.cpp: In function 'int main()':
strange_device.cpp:44:17: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
44 | for(ll i=0;i<v.size();){
| ~^~~~~~~~~
strange_device.cpp:46:20: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
46 | while(nxt+1<v.size()&&v[nxt+1].ff<=curR){
| ~~~~~^~~~~~~~~
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
348 KB |
Output is correct |
2 |
Correct |
3 ms |
860 KB |
Output is correct |
3 |
Correct |
5 ms |
860 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 |
0 ms |
348 KB |
Output is correct |
13 |
Correct |
0 ms |
348 KB |
Output is correct |
14 |
Correct |
0 ms |
344 KB |
Output is correct |
15 |
Correct |
0 ms |
348 KB |
Output is correct |
16 |
Correct |
3 ms |
860 KB |
Output is correct |
17 |
Correct |
38 ms |
4044 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 |
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 |
600 KB |
Output is correct |
4 |
Correct |
1 ms |
348 KB |
Output is correct |
5 |
Correct |
217 ms |
34268 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
348 KB |
Output is correct |
2 |
Correct |
314 ms |
34392 KB |
Output is correct |
3 |
Correct |
305 ms |
69928 KB |
Output is correct |
4 |
Correct |
307 ms |
71340 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
348 KB |
Output is correct |
2 |
Correct |
314 ms |
34392 KB |
Output is correct |
3 |
Correct |
305 ms |
69928 KB |
Output is correct |
4 |
Correct |
307 ms |
71340 KB |
Output is correct |
5 |
Correct |
0 ms |
344 KB |
Output is correct |
6 |
Correct |
308 ms |
71224 KB |
Output is correct |
7 |
Correct |
329 ms |
70832 KB |
Output is correct |
8 |
Correct |
322 ms |
71348 KB |
Output is correct |
9 |
Correct |
360 ms |
69944 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
348 KB |
Output is correct |
2 |
Correct |
314 ms |
34392 KB |
Output is correct |
3 |
Correct |
305 ms |
69928 KB |
Output is correct |
4 |
Correct |
307 ms |
71340 KB |
Output is correct |
5 |
Correct |
1 ms |
344 KB |
Output is correct |
6 |
Correct |
35 ms |
7876 KB |
Output is correct |
7 |
Correct |
35 ms |
7864 KB |
Output is correct |
8 |
Correct |
31 ms |
7884 KB |
Output is correct |
9 |
Correct |
36 ms |
7748 KB |
Output is correct |
10 |
Correct |
33 ms |
7884 KB |
Output is correct |
11 |
Correct |
34 ms |
7896 KB |
Output is correct |
12 |
Correct |
31 ms |
7744 KB |
Output is correct |
13 |
Correct |
36 ms |
7884 KB |
Output is correct |
14 |
Correct |
32 ms |
7888 KB |
Output is correct |
15 |
Correct |
37 ms |
7752 KB |
Output is correct |
16 |
Correct |
39 ms |
7732 KB |
Output is correct |
17 |
Correct |
34 ms |
7884 KB |
Output is correct |
18 |
Correct |
343 ms |
69932 KB |
Output is correct |
19 |
Correct |
322 ms |
70968 KB |
Output is correct |
20 |
Correct |
357 ms |
70452 KB |
Output is correct |
21 |
Correct |
38 ms |
7708 KB |
Output is correct |
22 |
Correct |
30 ms |
7888 KB |
Output is correct |
23 |
Correct |
93 ms |
28520 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
344 KB |
Output is correct |
2 |
Correct |
33 ms |
4056 KB |
Output is correct |
3 |
Correct |
34 ms |
7896 KB |
Output is correct |
4 |
Correct |
391 ms |
70452 KB |
Output is correct |
5 |
Correct |
34 ms |
7896 KB |
Output is correct |
6 |
Correct |
37 ms |
7748 KB |
Output is correct |
7 |
Correct |
39 ms |
8004 KB |
Output is correct |
8 |
Correct |
35 ms |
7888 KB |
Output is correct |
9 |
Correct |
33 ms |
7884 KB |
Output is correct |
10 |
Correct |
34 ms |
7752 KB |
Output is correct |
11 |
Correct |
38 ms |
7748 KB |
Output is correct |
12 |
Correct |
29 ms |
7928 KB |
Output is correct |
13 |
Correct |
38 ms |
7896 KB |
Output is correct |
14 |
Correct |
353 ms |
70208 KB |
Output is correct |
15 |
Correct |
38 ms |
7884 KB |
Output is correct |
16 |
Correct |
418 ms |
71352 KB |
Output is correct |
17 |
Correct |
307 ms |
70836 KB |
Output is correct |
18 |
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 |
3 ms |
860 KB |
Output is correct |
3 |
Correct |
5 ms |
860 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 |
0 ms |
348 KB |
Output is correct |
13 |
Correct |
0 ms |
348 KB |
Output is correct |
14 |
Correct |
0 ms |
344 KB |
Output is correct |
15 |
Correct |
0 ms |
348 KB |
Output is correct |
16 |
Correct |
3 ms |
860 KB |
Output is correct |
17 |
Correct |
38 ms |
4044 KB |
Output is correct |
18 |
Correct |
0 ms |
348 KB |
Output is correct |
19 |
Correct |
0 ms |
344 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 |
600 KB |
Output is correct |
27 |
Correct |
1 ms |
348 KB |
Output is correct |
28 |
Correct |
217 ms |
34268 KB |
Output is correct |
29 |
Correct |
0 ms |
348 KB |
Output is correct |
30 |
Correct |
314 ms |
34392 KB |
Output is correct |
31 |
Correct |
305 ms |
69928 KB |
Output is correct |
32 |
Correct |
307 ms |
71340 KB |
Output is correct |
33 |
Correct |
0 ms |
344 KB |
Output is correct |
34 |
Correct |
308 ms |
71224 KB |
Output is correct |
35 |
Correct |
329 ms |
70832 KB |
Output is correct |
36 |
Correct |
322 ms |
71348 KB |
Output is correct |
37 |
Correct |
360 ms |
69944 KB |
Output is correct |
38 |
Correct |
1 ms |
344 KB |
Output is correct |
39 |
Correct |
35 ms |
7876 KB |
Output is correct |
40 |
Correct |
35 ms |
7864 KB |
Output is correct |
41 |
Correct |
31 ms |
7884 KB |
Output is correct |
42 |
Correct |
36 ms |
7748 KB |
Output is correct |
43 |
Correct |
33 ms |
7884 KB |
Output is correct |
44 |
Correct |
34 ms |
7896 KB |
Output is correct |
45 |
Correct |
31 ms |
7744 KB |
Output is correct |
46 |
Correct |
36 ms |
7884 KB |
Output is correct |
47 |
Correct |
32 ms |
7888 KB |
Output is correct |
48 |
Correct |
37 ms |
7752 KB |
Output is correct |
49 |
Correct |
39 ms |
7732 KB |
Output is correct |
50 |
Correct |
34 ms |
7884 KB |
Output is correct |
51 |
Correct |
343 ms |
69932 KB |
Output is correct |
52 |
Correct |
322 ms |
70968 KB |
Output is correct |
53 |
Correct |
357 ms |
70452 KB |
Output is correct |
54 |
Correct |
38 ms |
7708 KB |
Output is correct |
55 |
Correct |
30 ms |
7888 KB |
Output is correct |
56 |
Correct |
93 ms |
28520 KB |
Output is correct |
57 |
Correct |
0 ms |
344 KB |
Output is correct |
58 |
Correct |
33 ms |
4056 KB |
Output is correct |
59 |
Correct |
34 ms |
7896 KB |
Output is correct |
60 |
Correct |
391 ms |
70452 KB |
Output is correct |
61 |
Correct |
34 ms |
7896 KB |
Output is correct |
62 |
Correct |
37 ms |
7748 KB |
Output is correct |
63 |
Correct |
39 ms |
8004 KB |
Output is correct |
64 |
Correct |
35 ms |
7888 KB |
Output is correct |
65 |
Correct |
33 ms |
7884 KB |
Output is correct |
66 |
Correct |
34 ms |
7752 KB |
Output is correct |
67 |
Correct |
38 ms |
7748 KB |
Output is correct |
68 |
Correct |
29 ms |
7928 KB |
Output is correct |
69 |
Correct |
38 ms |
7896 KB |
Output is correct |
70 |
Correct |
353 ms |
70208 KB |
Output is correct |
71 |
Correct |
38 ms |
7884 KB |
Output is correct |
72 |
Correct |
418 ms |
71352 KB |
Output is correct |
73 |
Correct |
307 ms |
70836 KB |
Output is correct |
74 |
Correct |
1 ms |
348 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 |
0 ms |
348 KB |
Output is correct |
79 |
Correct |
4 ms |
1372 KB |
Output is correct |
80 |
Correct |
372 ms |
71352 KB |
Output is correct |
81 |
Correct |
413 ms |
70456 KB |
Output is correct |
82 |
Correct |
341 ms |
70840 KB |
Output is correct |
83 |
Correct |
347 ms |
71472 KB |
Output is correct |
84 |
Correct |
351 ms |
69812 KB |
Output is correct |
85 |
Correct |
362 ms |
71272 KB |
Output is correct |
86 |
Correct |
93 ms |
26840 KB |
Output is correct |
87 |
Correct |
0 ms |
344 KB |
Output is correct |