#include <iostream>
#include <set>
#include <fstream>
using namespace std;
const long long lim=(long long)(1LL*1e18)+1;
long long n,i,j,l,r,A,B,L,R;
long long ans;
bool brk;
struct pct
{
long long x,y;
}nl;
bool operator <(pct unu,pct doi)
{
if(unu.x==doi.x) return unu.y<doi.y;
return unu.x<doi.x;
}
bool operator !=(pct unu,pct doi)
{
return (unu.x!=doi.x||unu.y!=doi.y);
}
set <pct> s;
set <pct>::iterator it,it1;
long long gcd(long long x,long long y)
{
if((!x)||(!y)) return (x+y);
return gcd(y,x%y);
}
void baga(long long st,long long dr)
{
it=s.lower_bound({st,0});
while(it!=s.end()&&(*it).x<=dr)
{
dr=max(dr,(*it).y);
it1=it;it1++;s.erase(it);
it=it1;
}
it=s.lower_bound({st,0});
if(it!=s.begin())
{
it--;
if((*it).y>=st)
{
st=min(st,(*it).x);
s.erase(it);
}
}
s.insert({st,dr});
}
int main()
{
// freopen("data.in","r",stdin);
ios_base::sync_with_stdio(false);
cin>>n>>A>>B;
long long t=gcd(A,B+1);
A/=t;
long long per;
if(lim/A<=B) per=1LL*lim;
else per=1LL*A*B;
for(i=1;i<=n;i++)
{
cin>>l>>r;
if(l/per==r/per)
{
baga(l%per,r%per);
}
else
{
if(l/per+1<r/per)
baga(0,per-1);
baga(l%per,per-1);
baga(0,r%per);
}
}
for(it=s.begin();it!=s.end();it++)
ans+=1LL*((*it).y-(*it).x+1);
cout<<ans;
return 0;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
2 ms |
376 KB |
Output is correct |
2 |
Incorrect |
12 ms |
1144 KB |
Output isn't correct |
3 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
2 ms |
376 KB |
Output is correct |
2 |
Correct |
2 ms |
256 KB |
Output is correct |
3 |
Correct |
2 ms |
296 KB |
Output is correct |
4 |
Correct |
2 ms |
376 KB |
Output is correct |
5 |
Correct |
2 ms |
348 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
2 ms |
392 KB |
Output is correct |
2 |
Incorrect |
3 ms |
380 KB |
Output isn't correct |
3 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
2 ms |
376 KB |
Output is correct |
2 |
Correct |
1281 ms |
63016 KB |
Output is correct |
3 |
Correct |
1334 ms |
63516 KB |
Output is correct |
4 |
Correct |
1422 ms |
63656 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
2 ms |
376 KB |
Output is correct |
2 |
Correct |
1281 ms |
63016 KB |
Output is correct |
3 |
Correct |
1334 ms |
63516 KB |
Output is correct |
4 |
Correct |
1422 ms |
63656 KB |
Output is correct |
5 |
Correct |
2 ms |
376 KB |
Output is correct |
6 |
Correct |
1306 ms |
63288 KB |
Output is correct |
7 |
Correct |
1384 ms |
63548 KB |
Output is correct |
8 |
Correct |
1314 ms |
63476 KB |
Output is correct |
9 |
Correct |
1471 ms |
63392 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
2 ms |
376 KB |
Output is correct |
2 |
Correct |
1281 ms |
63016 KB |
Output is correct |
3 |
Correct |
1334 ms |
63516 KB |
Output is correct |
4 |
Correct |
1422 ms |
63656 KB |
Output is correct |
5 |
Correct |
2 ms |
376 KB |
Output is correct |
6 |
Correct |
104 ms |
7128 KB |
Output is correct |
7 |
Correct |
104 ms |
6904 KB |
Output is correct |
8 |
Correct |
112 ms |
6980 KB |
Output is correct |
9 |
Correct |
121 ms |
6904 KB |
Output is correct |
10 |
Correct |
105 ms |
6904 KB |
Output is correct |
11 |
Correct |
110 ms |
6904 KB |
Output is correct |
12 |
Correct |
109 ms |
6904 KB |
Output is correct |
13 |
Correct |
131 ms |
6972 KB |
Output is correct |
14 |
Correct |
114 ms |
7032 KB |
Output is correct |
15 |
Correct |
154 ms |
7004 KB |
Output is correct |
16 |
Incorrect |
127 ms |
7768 KB |
Output isn't correct |
17 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
2 ms |
376 KB |
Output is correct |
2 |
Correct |
129 ms |
6884 KB |
Output is correct |
3 |
Correct |
153 ms |
6904 KB |
Output is correct |
4 |
Correct |
1487 ms |
63436 KB |
Output is correct |
5 |
Correct |
129 ms |
7204 KB |
Output is correct |
6 |
Correct |
130 ms |
7272 KB |
Output is correct |
7 |
Correct |
131 ms |
7264 KB |
Output is correct |
8 |
Correct |
134 ms |
7292 KB |
Output is correct |
9 |
Correct |
128 ms |
7208 KB |
Output is correct |
10 |
Correct |
112 ms |
7200 KB |
Output is correct |
11 |
Correct |
116 ms |
7264 KB |
Output is correct |
12 |
Correct |
118 ms |
7228 KB |
Output is correct |
13 |
Correct |
128 ms |
7388 KB |
Output is correct |
14 |
Correct |
1467 ms |
63508 KB |
Output is correct |
15 |
Incorrect |
107 ms |
8312 KB |
Output isn't correct |
16 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
2 ms |
376 KB |
Output is correct |
2 |
Incorrect |
12 ms |
1144 KB |
Output isn't correct |
3 |
Halted |
0 ms |
0 KB |
- |