#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/b) 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 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 |
3092 KB |
Output is correct |
3 |
Correct |
5 ms |
3164 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 |
1 ms |
2396 KB |
Output is correct |
2 |
Correct |
1 ms |
2408 KB |
Output is correct |
3 |
Correct |
1 ms |
2392 KB |
Output is correct |
4 |
Correct |
0 ms |
2396 KB |
Output is correct |
5 |
Correct |
1 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 |
2396 KB |
Output is correct |
3 |
Correct |
1 ms |
2396 KB |
Output is correct |
4 |
Correct |
1 ms |
2396 KB |
Output is correct |
5 |
Correct |
204 ms |
15996 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
2396 KB |
Output is correct |
2 |
Correct |
514 ms |
78736 KB |
Output is correct |
3 |
Incorrect |
550 ms |
78468 KB |
Output isn't correct |
4 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
2396 KB |
Output is correct |
2 |
Correct |
514 ms |
78736 KB |
Output is correct |
3 |
Incorrect |
550 ms |
78468 KB |
Output isn't correct |
4 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
2396 KB |
Output is correct |
2 |
Correct |
514 ms |
78736 KB |
Output is correct |
3 |
Incorrect |
550 ms |
78468 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 |
52 ms |
12880 KB |
Output is correct |
3 |
Correct |
56 ms |
13036 KB |
Output is correct |
4 |
Correct |
604 ms |
78672 KB |
Output is correct |
5 |
Correct |
61 ms |
12880 KB |
Output is correct |
6 |
Correct |
54 ms |
12784 KB |
Output is correct |
7 |
Correct |
54 ms |
12880 KB |
Output is correct |
8 |
Correct |
54 ms |
12892 KB |
Output is correct |
9 |
Correct |
50 ms |
13036 KB |
Output is correct |
10 |
Correct |
48 ms |
12892 KB |
Output is correct |
11 |
Correct |
48 ms |
12800 KB |
Output is correct |
12 |
Correct |
51 ms |
12888 KB |
Output is correct |
13 |
Correct |
56 ms |
13036 KB |
Output is correct |
14 |
Correct |
645 ms |
78828 KB |
Output is correct |
15 |
Incorrect |
53 ms |
12884 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 |
3092 KB |
Output is correct |
3 |
Correct |
5 ms |
3164 KB |
Output is correct |
4 |
Incorrect |
1 ms |
2396 KB |
Output isn't correct |
5 |
Halted |
0 ms |
0 KB |
- |