#ifdef ONLINE_JUDGE
#include "cyberland.h"
#endif
#include <bits/stdc++.h>
#define se second
#define fs first
#define mp make_pair
#define pb push_back
#define ll long long
#define ii pair<ll,ll>
#define ld long double
#define SZ(v) (int)v.size()
#define ALL(v) v.begin(), v.end()
#define bit(msk, i) ((msk >> i) & 1)
#define iter(id, v) for(auto id : v)
#define rep(i,m,n) for(int i=(m); i<=(n); i++)
#define reb(i,m,n) for(int i=(m); i>=(n); i--)
using namespace std;
mt19937_64 rd(chrono :: steady_clock :: now().time_since_epoch().count());
ll Rand(ll l, ll r) { return uniform_int_distribution<ll> (l, r)(rd); }
const int N = 1e6 + 7;
const int Mod = 1e9 +7;
const int szBL = 50;
const ll INF = 2e18 + 7;
const int BASE = 137;
int n;
ll A, B;
pair<ll, ll> a[N];
void solution() {
cin >> n >> A >> B;
rep (i ,1, n) {
cin >> a[i].fs >> a[i].se;
}
ll K = min((__int128)INF, (__int128)A / __gcd(A, B + 1) * B);
rep (i, 1, n) {
if (a[i].se == a[i].fs) {
a[i].se %= K;
a[i].fs %= K;
}
else {
a[i].se %= K;
a[i].fs %= K;
if (a[i].se <= a[i].fs) {
a[++n] = {0, a[i].se};
a[i].se = K - 1;
}
}
}
sort (a + 1 , a + 1 + n);
ll mnL = a[1].fs, mxR = a[1].se;
ll res = 0;
rep (i, 2, n) {
if (a[i].fs > mxR) {
res += mxR - mnL + 1;
mnL = a[i].fs;
mxR = a[i].se;
}
else {
mxR = max(mxR, a[i].se);
}
}
res += mxR - mnL + 1;
cout << res <<"\n";
}
#define file(name) freopen(name".inp", "r", stdin); freopen(name".out", "w", stdout);
int main () {
ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
// file ("c");
int num_Test = 1;
// cin >> num_Test;
while (num_Test--)
solution();
}
/*
7
1 2 3 1 2 1 3
1
4 4 30
3
1 1 2 1
0 1 5
0 2 5
1 3 2
2 3 4
3 2
0 1 5
0 2 5
1
1 2
*/
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
344 KB |
Output is correct |
2 |
Correct |
3 ms |
860 KB |
Output is correct |
3 |
Correct |
3 ms |
884 KB |
Output is correct |
4 |
Correct |
0 ms |
344 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 |
1 ms |
344 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 |
348 KB |
Output is correct |
15 |
Correct |
0 ms |
352 KB |
Output is correct |
16 |
Correct |
3 ms |
860 KB |
Output is correct |
17 |
Correct |
30 ms |
5700 KB |
Output is correct |
18 |
Correct |
0 ms |
352 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
360 KB |
Output is correct |
2 |
Incorrect |
0 ms |
356 KB |
Output isn't correct |
3 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
348 KB |
Output is correct |
2 |
Correct |
1 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 |
181 ms |
40016 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
348 KB |
Output is correct |
2 |
Correct |
271 ms |
44464 KB |
Output is correct |
3 |
Correct |
290 ms |
51024 KB |
Output is correct |
4 |
Correct |
282 ms |
51080 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
348 KB |
Output is correct |
2 |
Correct |
271 ms |
44464 KB |
Output is correct |
3 |
Correct |
290 ms |
51024 KB |
Output is correct |
4 |
Correct |
282 ms |
51080 KB |
Output is correct |
5 |
Correct |
0 ms |
348 KB |
Output is correct |
6 |
Correct |
267 ms |
50940 KB |
Output is correct |
7 |
Correct |
251 ms |
50968 KB |
Output is correct |
8 |
Correct |
259 ms |
51012 KB |
Output is correct |
9 |
Correct |
279 ms |
51160 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
348 KB |
Output is correct |
2 |
Correct |
271 ms |
44464 KB |
Output is correct |
3 |
Correct |
290 ms |
51024 KB |
Output is correct |
4 |
Correct |
282 ms |
51080 KB |
Output is correct |
5 |
Correct |
0 ms |
344 KB |
Output is correct |
6 |
Correct |
31 ms |
5720 KB |
Output is correct |
7 |
Correct |
28 ms |
5512 KB |
Output is correct |
8 |
Correct |
29 ms |
5724 KB |
Output is correct |
9 |
Correct |
27 ms |
5692 KB |
Output is correct |
10 |
Correct |
26 ms |
5724 KB |
Output is correct |
11 |
Correct |
27 ms |
5656 KB |
Output is correct |
12 |
Correct |
26 ms |
5716 KB |
Output is correct |
13 |
Correct |
30 ms |
5536 KB |
Output is correct |
14 |
Correct |
26 ms |
5724 KB |
Output is correct |
15 |
Correct |
28 ms |
5724 KB |
Output is correct |
16 |
Correct |
30 ms |
5724 KB |
Output is correct |
17 |
Correct |
46 ms |
5712 KB |
Output is correct |
18 |
Correct |
257 ms |
51156 KB |
Output is correct |
19 |
Correct |
265 ms |
50980 KB |
Output is correct |
20 |
Correct |
281 ms |
51028 KB |
Output is correct |
21 |
Correct |
32 ms |
5712 KB |
Output is correct |
22 |
Correct |
25 ms |
5720 KB |
Output is correct |
23 |
Correct |
90 ms |
18000 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
348 KB |
Output is correct |
2 |
Correct |
28 ms |
5104 KB |
Output is correct |
3 |
Correct |
29 ms |
5724 KB |
Output is correct |
4 |
Correct |
286 ms |
51020 KB |
Output is correct |
5 |
Correct |
28 ms |
5556 KB |
Output is correct |
6 |
Correct |
29 ms |
5720 KB |
Output is correct |
7 |
Correct |
29 ms |
5716 KB |
Output is correct |
8 |
Correct |
30 ms |
5712 KB |
Output is correct |
9 |
Correct |
41 ms |
5708 KB |
Output is correct |
10 |
Correct |
28 ms |
5640 KB |
Output is correct |
11 |
Correct |
28 ms |
5716 KB |
Output is correct |
12 |
Correct |
25 ms |
5720 KB |
Output is correct |
13 |
Correct |
28 ms |
5716 KB |
Output is correct |
14 |
Correct |
274 ms |
51332 KB |
Output is correct |
15 |
Correct |
25 ms |
5720 KB |
Output is correct |
16 |
Correct |
275 ms |
51540 KB |
Output is correct |
17 |
Correct |
251 ms |
51284 KB |
Output is correct |
18 |
Correct |
0 ms |
344 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
344 KB |
Output is correct |
2 |
Correct |
3 ms |
860 KB |
Output is correct |
3 |
Correct |
3 ms |
884 KB |
Output is correct |
4 |
Correct |
0 ms |
344 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 |
1 ms |
344 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 |
348 KB |
Output is correct |
15 |
Correct |
0 ms |
352 KB |
Output is correct |
16 |
Correct |
3 ms |
860 KB |
Output is correct |
17 |
Correct |
30 ms |
5700 KB |
Output is correct |
18 |
Correct |
0 ms |
352 KB |
Output is correct |
19 |
Correct |
0 ms |
360 KB |
Output is correct |
20 |
Incorrect |
0 ms |
356 KB |
Output isn't correct |
21 |
Halted |
0 ms |
0 KB |
- |