#include<iostream>
#include<cstdio>
#include<algorithm>
#include<set>
using namespace std;
#define ll long long
#define MAX 1000100
inline ll read()
{
ll x=0;bool t=false;char ch=getchar();
while((ch<'0'||ch>'9')&&ch!='-')ch=getchar();
if(ch=='-')t=true,ch=getchar();
while(ch<='9'&&ch>='0')x=x*10+ch-48,ch=getchar();
return t?-x:x;
}
ll n,sum,l[MAX],r[MAX],A,B,d,T,ans;
multiset<pair<ll,int> >S;
#define mp make_pair
void Add(ll l,ll r){S.insert(mp(l,1));S.insert(mp(r+1,-1));}
int main()
{
n=read();A=read();B=read();d=__gcd(A,B+1);
for(int i=1;i<=n;++i)l[i]=read(),r[i]=read(),sum+=r[i]-l[i]+1;
if(1.0*A*B/d>1e18){printf("%lld\n",sum);return 0;}
T=A/d*B;
for(int i=1;i<=n;++i)
{
if(r[i]-l[i]+1>=T){printf("%lld\n",T);return 0;}
if(l[i]/T!=r[i]/T)Add(l[i]%T,T-1),Add(0,r[i]%T);
else Add(l[i]%T,r[i]%T);
}
S.insert(mp(T,0));
ll lst=-1,c=0;
for(auto a:S)
{
if(c>0)ans+=a.first-lst;
c+=a.second;
lst=a.first;
}
printf("%lld\n",ans);
return 0;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
256 KB |
Output is correct |
2 |
Correct |
9 ms |
1792 KB |
Output is correct |
3 |
Correct |
9 ms |
1792 KB |
Output is correct |
4 |
Correct |
0 ms |
256 KB |
Output is correct |
5 |
Correct |
0 ms |
384 KB |
Output is correct |
6 |
Correct |
0 ms |
384 KB |
Output is correct |
7 |
Correct |
0 ms |
384 KB |
Output is correct |
8 |
Correct |
0 ms |
384 KB |
Output is correct |
9 |
Correct |
0 ms |
384 KB |
Output is correct |
10 |
Correct |
0 ms |
384 KB |
Output is correct |
11 |
Correct |
0 ms |
384 KB |
Output is correct |
12 |
Correct |
0 ms |
384 KB |
Output is correct |
13 |
Correct |
1 ms |
384 KB |
Output is correct |
14 |
Correct |
0 ms |
384 KB |
Output is correct |
15 |
Correct |
0 ms |
384 KB |
Output is correct |
16 |
Correct |
8 ms |
1792 KB |
Output is correct |
17 |
Correct |
99 ms |
14468 KB |
Output is correct |
18 |
Correct |
0 ms |
256 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
384 KB |
Output is correct |
2 |
Correct |
0 ms |
256 KB |
Output is correct |
3 |
Correct |
0 ms |
384 KB |
Output is correct |
4 |
Correct |
0 ms |
384 KB |
Output is correct |
5 |
Correct |
0 ms |
384 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
384 KB |
Output is correct |
2 |
Correct |
1 ms |
512 KB |
Output is correct |
3 |
Correct |
1 ms |
512 KB |
Output is correct |
4 |
Correct |
1 ms |
512 KB |
Output is correct |
5 |
Correct |
1061 ms |
141268 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
384 KB |
Output is correct |
2 |
Correct |
1020 ms |
141228 KB |
Output is correct |
3 |
Correct |
1060 ms |
141304 KB |
Output is correct |
4 |
Correct |
1052 ms |
141260 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
384 KB |
Output is correct |
2 |
Correct |
1020 ms |
141228 KB |
Output is correct |
3 |
Correct |
1060 ms |
141304 KB |
Output is correct |
4 |
Correct |
1052 ms |
141260 KB |
Output is correct |
5 |
Correct |
0 ms |
256 KB |
Output is correct |
6 |
Correct |
1064 ms |
141300 KB |
Output is correct |
7 |
Correct |
1049 ms |
141492 KB |
Output is correct |
8 |
Correct |
1016 ms |
141296 KB |
Output is correct |
9 |
Correct |
1092 ms |
141160 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
384 KB |
Output is correct |
2 |
Correct |
1020 ms |
141228 KB |
Output is correct |
3 |
Correct |
1060 ms |
141304 KB |
Output is correct |
4 |
Correct |
1052 ms |
141260 KB |
Output is correct |
5 |
Correct |
0 ms |
384 KB |
Output is correct |
6 |
Correct |
86 ms |
14456 KB |
Output is correct |
7 |
Correct |
90 ms |
14456 KB |
Output is correct |
8 |
Correct |
92 ms |
14460 KB |
Output is correct |
9 |
Correct |
99 ms |
14456 KB |
Output is correct |
10 |
Correct |
87 ms |
14460 KB |
Output is correct |
11 |
Correct |
100 ms |
14456 KB |
Output is correct |
12 |
Correct |
98 ms |
14456 KB |
Output is correct |
13 |
Correct |
101 ms |
14476 KB |
Output is correct |
14 |
Correct |
88 ms |
14456 KB |
Output is correct |
15 |
Correct |
110 ms |
14456 KB |
Output is correct |
16 |
Correct |
105 ms |
14456 KB |
Output is correct |
17 |
Correct |
97 ms |
14456 KB |
Output is correct |
18 |
Correct |
1042 ms |
141208 KB |
Output is correct |
19 |
Correct |
1100 ms |
141176 KB |
Output is correct |
20 |
Correct |
1106 ms |
141148 KB |
Output is correct |
21 |
Correct |
97 ms |
14456 KB |
Output is correct |
22 |
Correct |
94 ms |
14456 KB |
Output is correct |
23 |
Correct |
395 ms |
48376 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
384 KB |
Output is correct |
2 |
Correct |
104 ms |
14456 KB |
Output is correct |
3 |
Correct |
109 ms |
14456 KB |
Output is correct |
4 |
Correct |
1063 ms |
141944 KB |
Output is correct |
5 |
Correct |
108 ms |
14456 KB |
Output is correct |
6 |
Correct |
117 ms |
14456 KB |
Output is correct |
7 |
Correct |
106 ms |
14456 KB |
Output is correct |
8 |
Correct |
102 ms |
14460 KB |
Output is correct |
9 |
Correct |
100 ms |
14584 KB |
Output is correct |
10 |
Correct |
100 ms |
14456 KB |
Output is correct |
11 |
Correct |
98 ms |
14456 KB |
Output is correct |
12 |
Correct |
100 ms |
14380 KB |
Output is correct |
13 |
Correct |
117 ms |
14456 KB |
Output is correct |
14 |
Correct |
1140 ms |
141672 KB |
Output is correct |
15 |
Correct |
95 ms |
14456 KB |
Output is correct |
16 |
Correct |
1022 ms |
141316 KB |
Output is correct |
17 |
Correct |
1012 ms |
141272 KB |
Output is correct |
18 |
Correct |
1 ms |
384 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
256 KB |
Output is correct |
2 |
Correct |
9 ms |
1792 KB |
Output is correct |
3 |
Correct |
9 ms |
1792 KB |
Output is correct |
4 |
Correct |
0 ms |
256 KB |
Output is correct |
5 |
Correct |
0 ms |
384 KB |
Output is correct |
6 |
Correct |
0 ms |
384 KB |
Output is correct |
7 |
Correct |
0 ms |
384 KB |
Output is correct |
8 |
Correct |
0 ms |
384 KB |
Output is correct |
9 |
Correct |
0 ms |
384 KB |
Output is correct |
10 |
Correct |
0 ms |
384 KB |
Output is correct |
11 |
Correct |
0 ms |
384 KB |
Output is correct |
12 |
Correct |
0 ms |
384 KB |
Output is correct |
13 |
Correct |
1 ms |
384 KB |
Output is correct |
14 |
Correct |
0 ms |
384 KB |
Output is correct |
15 |
Correct |
0 ms |
384 KB |
Output is correct |
16 |
Correct |
8 ms |
1792 KB |
Output is correct |
17 |
Correct |
99 ms |
14468 KB |
Output is correct |
18 |
Correct |
0 ms |
256 KB |
Output is correct |
19 |
Correct |
0 ms |
384 KB |
Output is correct |
20 |
Correct |
0 ms |
256 KB |
Output is correct |
21 |
Correct |
0 ms |
384 KB |
Output is correct |
22 |
Correct |
0 ms |
384 KB |
Output is correct |
23 |
Correct |
0 ms |
384 KB |
Output is correct |
24 |
Correct |
0 ms |
384 KB |
Output is correct |
25 |
Correct |
1 ms |
512 KB |
Output is correct |
26 |
Correct |
1 ms |
512 KB |
Output is correct |
27 |
Correct |
1 ms |
512 KB |
Output is correct |
28 |
Correct |
1061 ms |
141268 KB |
Output is correct |
29 |
Correct |
0 ms |
384 KB |
Output is correct |
30 |
Correct |
1020 ms |
141228 KB |
Output is correct |
31 |
Correct |
1060 ms |
141304 KB |
Output is correct |
32 |
Correct |
1052 ms |
141260 KB |
Output is correct |
33 |
Correct |
0 ms |
256 KB |
Output is correct |
34 |
Correct |
1064 ms |
141300 KB |
Output is correct |
35 |
Correct |
1049 ms |
141492 KB |
Output is correct |
36 |
Correct |
1016 ms |
141296 KB |
Output is correct |
37 |
Correct |
1092 ms |
141160 KB |
Output is correct |
38 |
Correct |
0 ms |
384 KB |
Output is correct |
39 |
Correct |
86 ms |
14456 KB |
Output is correct |
40 |
Correct |
90 ms |
14456 KB |
Output is correct |
41 |
Correct |
92 ms |
14460 KB |
Output is correct |
42 |
Correct |
99 ms |
14456 KB |
Output is correct |
43 |
Correct |
87 ms |
14460 KB |
Output is correct |
44 |
Correct |
100 ms |
14456 KB |
Output is correct |
45 |
Correct |
98 ms |
14456 KB |
Output is correct |
46 |
Correct |
101 ms |
14476 KB |
Output is correct |
47 |
Correct |
88 ms |
14456 KB |
Output is correct |
48 |
Correct |
110 ms |
14456 KB |
Output is correct |
49 |
Correct |
105 ms |
14456 KB |
Output is correct |
50 |
Correct |
97 ms |
14456 KB |
Output is correct |
51 |
Correct |
1042 ms |
141208 KB |
Output is correct |
52 |
Correct |
1100 ms |
141176 KB |
Output is correct |
53 |
Correct |
1106 ms |
141148 KB |
Output is correct |
54 |
Correct |
97 ms |
14456 KB |
Output is correct |
55 |
Correct |
94 ms |
14456 KB |
Output is correct |
56 |
Correct |
395 ms |
48376 KB |
Output is correct |
57 |
Correct |
0 ms |
384 KB |
Output is correct |
58 |
Correct |
104 ms |
14456 KB |
Output is correct |
59 |
Correct |
109 ms |
14456 KB |
Output is correct |
60 |
Correct |
1063 ms |
141944 KB |
Output is correct |
61 |
Correct |
108 ms |
14456 KB |
Output is correct |
62 |
Correct |
117 ms |
14456 KB |
Output is correct |
63 |
Correct |
106 ms |
14456 KB |
Output is correct |
64 |
Correct |
102 ms |
14460 KB |
Output is correct |
65 |
Correct |
100 ms |
14584 KB |
Output is correct |
66 |
Correct |
100 ms |
14456 KB |
Output is correct |
67 |
Correct |
98 ms |
14456 KB |
Output is correct |
68 |
Correct |
100 ms |
14380 KB |
Output is correct |
69 |
Correct |
117 ms |
14456 KB |
Output is correct |
70 |
Correct |
1140 ms |
141672 KB |
Output is correct |
71 |
Correct |
95 ms |
14456 KB |
Output is correct |
72 |
Correct |
1022 ms |
141316 KB |
Output is correct |
73 |
Correct |
1012 ms |
141272 KB |
Output is correct |
74 |
Correct |
1 ms |
384 KB |
Output is correct |
75 |
Correct |
1 ms |
384 KB |
Output is correct |
76 |
Correct |
0 ms |
256 KB |
Output is correct |
77 |
Correct |
1 ms |
384 KB |
Output is correct |
78 |
Correct |
0 ms |
384 KB |
Output is correct |
79 |
Correct |
10 ms |
2048 KB |
Output is correct |
80 |
Correct |
1082 ms |
148164 KB |
Output is correct |
81 |
Correct |
1107 ms |
148276 KB |
Output is correct |
82 |
Correct |
1085 ms |
148336 KB |
Output is correct |
83 |
Correct |
1146 ms |
148288 KB |
Output is correct |
84 |
Correct |
1137 ms |
148216 KB |
Output is correct |
85 |
Correct |
1052 ms |
148300 KB |
Output is correct |
86 |
Correct |
391 ms |
55284 KB |
Output is correct |
87 |
Correct |
1 ms |
384 KB |
Output is correct |