#include <bits/stdc++.h>
using namespace std;
#define ll long long
const int nx=1e6+5;
ll n, a, b, l[nx], r[nx], sm, p, mx, res;
set<pair<ll, ll>> s;
void add_range(ll x, ll y)
{
x=x%p;
y=y%p;
if (y<x) y+=p;
s.insert({x, min(p-1, y)});
if (y>=p) s.insert({0, y-p});
}
int main()
{
cin.tie(NULL)->sync_with_stdio(false);
cin>>n>>a>>b;
p=a*b;
for (int i=1; i<=n; i++) cin>>l[i]>>r[i], mx=max(mx, r[i]-l[i]+1), sm+=(r[i]-l[i]+1);
if (a>=(LLONG_MAX-1)/b+1) return cout<<sm, 0;
if (mx>=p) return cout<<p, 0;
for (int i=1; i<=n; i++) add_range(l[i], r[i]);
//for (auto [x, y]:s) cout<<"val "<<x<<' '<<y<<'\n';
for (auto itr=s.begin(); itr!=s.end()&&next(itr)!=s.end();)
{
auto itr2=next(itr);
pair<ll, ll> nw;
if (itr2->first>itr->second+1) itr=itr2;
else nw={itr->first, max(itr->second, itr2->second)}, s.erase(itr), s.erase(itr2), s.insert(nw), itr=s.find(nw);
}
for (auto [x, y]:s) res+=y-x+1;
cout<<res;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
2392 KB |
Output is correct |
2 |
Correct |
5 ms |
3420 KB |
Output is correct |
3 |
Correct |
6 ms |
3592 KB |
Output is correct |
4 |
Incorrect |
1 ms |
2396 KB |
Output isn't correct |
5 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
2 ms |
2512 KB |
Output is correct |
2 |
Correct |
1 ms |
2396 KB |
Output is correct |
3 |
Correct |
1 ms |
2392 KB |
Output is correct |
4 |
Correct |
1 ms |
2396 KB |
Output is correct |
5 |
Correct |
0 ms |
2396 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
2392 KB |
Output is correct |
2 |
Correct |
1 ms |
2528 KB |
Output is correct |
3 |
Correct |
1 ms |
2396 KB |
Output is correct |
4 |
Correct |
2 ms |
2396 KB |
Output is correct |
5 |
Correct |
190 ms |
41044 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
2392 KB |
Output is correct |
2 |
Correct |
515 ms |
115680 KB |
Output is correct |
3 |
Incorrect |
559 ms |
115832 KB |
Output isn't correct |
4 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
2392 KB |
Output is correct |
2 |
Correct |
515 ms |
115680 KB |
Output is correct |
3 |
Incorrect |
559 ms |
115832 KB |
Output isn't correct |
4 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
2392 KB |
Output is correct |
2 |
Correct |
515 ms |
115680 KB |
Output is correct |
3 |
Incorrect |
559 ms |
115832 KB |
Output isn't correct |
4 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
2392 KB |
Output is correct |
2 |
Correct |
55 ms |
16620 KB |
Output is correct |
3 |
Correct |
55 ms |
16724 KB |
Output is correct |
4 |
Correct |
633 ms |
116076 KB |
Output is correct |
5 |
Correct |
55 ms |
16748 KB |
Output is correct |
6 |
Correct |
59 ms |
16724 KB |
Output is correct |
7 |
Correct |
54 ms |
16732 KB |
Output is correct |
8 |
Correct |
55 ms |
16720 KB |
Output is correct |
9 |
Correct |
56 ms |
16712 KB |
Output is correct |
10 |
Correct |
49 ms |
16736 KB |
Output is correct |
11 |
Correct |
51 ms |
16580 KB |
Output is correct |
12 |
Correct |
50 ms |
16736 KB |
Output is correct |
13 |
Correct |
63 ms |
16740 KB |
Output is correct |
14 |
Correct |
727 ms |
115796 KB |
Output is correct |
15 |
Incorrect |
58 ms |
16712 KB |
Output isn't correct |
16 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
2392 KB |
Output is correct |
2 |
Correct |
5 ms |
3420 KB |
Output is correct |
3 |
Correct |
6 ms |
3592 KB |
Output is correct |
4 |
Incorrect |
1 ms |
2396 KB |
Output isn't correct |
5 |
Halted |
0 ms |
0 KB |
- |