#include <bits/stdc++.h>
#include <fstream>
#define endl '\n'
#define mod 1000000007
#define INF 1000000000
#define INF2 2000000000000000000
//#define ll long long
///#define cin fin
///#define cout fout
using namespace std;
double const EPS = 1e-14;
///ofstream fout("herding.out");
///ifstream fin("herding.in");
int main()
{
ios_base::sync_with_stdio(0);cout.tie(0);cin.tie(0);
long long n, a, b; cin >> n >> a >> b;
pair<long long, long long> p[n];
vector<pair<long long,int>> v;
long long md = (a*b)/__gcd(a,b+1);
// cout << n << ' ' << a << ' ' << b << endl;
// cout << md << endl;
bool ok = false;
for(int i = 0; i < n; i++) {
cin >> p[i].first >> p[i].second;
//cout << i << endl;
pair<long long, long long> pp;
pp = p[i];
p[i].first %= md;
p[i].second %= md;
if(p[i].second < p[i].first) {
if(pp.second-pp.first+1 >= md) {
cout << md << endl;
ok = true;
}
v.push_back({p[i].first,0});
v.push_back({md-1,1});
v.push_back({0,0});
v.push_back({p[i].second,1});
}
else {
v.push_back({p[i].first,0});
v.push_back({p[i].second,1});
}
}
if(ok) return 0;
sort(v.begin(),v.end()); int cnt = 0;
long long l = -1, r = 0;
long long ans = 0;
for(int i = 0; i < v.size(); i++) {
if(v[i].second == 0) {
cnt++;
if(l == -1) l = v[i].first;
}
else {
cnt--;
r = max(v[i].first,r);
}
if(cnt == 0) {
ans += r-l+1;
l = -1, r = 0;
}
}
cout << ans << endl;
return 0;
}
Compilation message
strange_device.cpp: In function 'int main()':
strange_device.cpp:51:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<long long int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
51 | for(int i = 0; i < v.size(); i++) {
| ~~^~~~~~~~~~
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
344 KB |
Output is correct |
2 |
Correct |
4 ms |
1504 KB |
Output is correct |
3 |
Correct |
4 ms |
1588 KB |
Output is correct |
4 |
Correct |
0 ms |
344 KB |
Output is correct |
5 |
Correct |
1 ms |
348 KB |
Output is correct |
6 |
Correct |
0 ms |
348 KB |
Output is correct |
7 |
Correct |
0 ms |
452 KB |
Output is correct |
8 |
Correct |
1 ms |
348 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 |
1 ms |
348 KB |
Output is correct |
16 |
Correct |
5 ms |
1624 KB |
Output is correct |
17 |
Correct |
56 ms |
10528 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 |
Incorrect |
1 ms |
600 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 |
1 ms |
348 KB |
Output is correct |
4 |
Correct |
1 ms |
348 KB |
Output is correct |
5 |
Correct |
259 ms |
73020 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
348 KB |
Output is correct |
2 |
Correct |
409 ms |
85288 KB |
Output is correct |
3 |
Correct |
418 ms |
84712 KB |
Output is correct |
4 |
Correct |
395 ms |
85296 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
348 KB |
Output is correct |
2 |
Correct |
409 ms |
85288 KB |
Output is correct |
3 |
Correct |
418 ms |
84712 KB |
Output is correct |
4 |
Correct |
395 ms |
85296 KB |
Output is correct |
5 |
Correct |
0 ms |
348 KB |
Output is correct |
6 |
Correct |
421 ms |
84504 KB |
Output is correct |
7 |
Correct |
403 ms |
85988 KB |
Output is correct |
8 |
Correct |
416 ms |
85884 KB |
Output is correct |
9 |
Correct |
470 ms |
84644 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
348 KB |
Output is correct |
2 |
Correct |
409 ms |
85288 KB |
Output is correct |
3 |
Correct |
418 ms |
84712 KB |
Output is correct |
4 |
Correct |
395 ms |
85296 KB |
Output is correct |
5 |
Correct |
0 ms |
344 KB |
Output is correct |
6 |
Correct |
39 ms |
10188 KB |
Output is correct |
7 |
Correct |
40 ms |
9172 KB |
Output is correct |
8 |
Correct |
39 ms |
10400 KB |
Output is correct |
9 |
Correct |
40 ms |
9364 KB |
Output is correct |
10 |
Correct |
37 ms |
10440 KB |
Output is correct |
11 |
Correct |
41 ms |
9416 KB |
Output is correct |
12 |
Correct |
37 ms |
10200 KB |
Output is correct |
13 |
Correct |
46 ms |
9280 KB |
Output is correct |
14 |
Correct |
40 ms |
9660 KB |
Output is correct |
15 |
Correct |
48 ms |
8904 KB |
Output is correct |
16 |
Correct |
45 ms |
9780 KB |
Output is correct |
17 |
Correct |
43 ms |
9416 KB |
Output is correct |
18 |
Correct |
419 ms |
85260 KB |
Output is correct |
19 |
Correct |
391 ms |
85748 KB |
Output is correct |
20 |
Correct |
490 ms |
84728 KB |
Output is correct |
21 |
Correct |
46 ms |
10696 KB |
Output is correct |
22 |
Correct |
34 ms |
9708 KB |
Output is correct |
23 |
Correct |
106 ms |
33460 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
348 KB |
Output is correct |
2 |
Correct |
44 ms |
9588 KB |
Output is correct |
3 |
Correct |
45 ms |
9856 KB |
Output is correct |
4 |
Correct |
534 ms |
84448 KB |
Output is correct |
5 |
Correct |
54 ms |
10188 KB |
Output is correct |
6 |
Correct |
46 ms |
10480 KB |
Output is correct |
7 |
Correct |
43 ms |
9420 KB |
Output is correct |
8 |
Correct |
45 ms |
10688 KB |
Output is correct |
9 |
Correct |
42 ms |
9680 KB |
Output is correct |
10 |
Correct |
45 ms |
10196 KB |
Output is correct |
11 |
Correct |
51 ms |
10740 KB |
Output is correct |
12 |
Correct |
39 ms |
9416 KB |
Output is correct |
13 |
Correct |
45 ms |
9396 KB |
Output is correct |
14 |
Correct |
468 ms |
84648 KB |
Output is correct |
15 |
Correct |
46 ms |
10196 KB |
Output is correct |
16 |
Correct |
372 ms |
84644 KB |
Output is correct |
17 |
Correct |
403 ms |
84768 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 |
4 ms |
1504 KB |
Output is correct |
3 |
Correct |
4 ms |
1588 KB |
Output is correct |
4 |
Correct |
0 ms |
344 KB |
Output is correct |
5 |
Correct |
1 ms |
348 KB |
Output is correct |
6 |
Correct |
0 ms |
348 KB |
Output is correct |
7 |
Correct |
0 ms |
452 KB |
Output is correct |
8 |
Correct |
1 ms |
348 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 |
1 ms |
348 KB |
Output is correct |
16 |
Correct |
5 ms |
1624 KB |
Output is correct |
17 |
Correct |
56 ms |
10528 KB |
Output is correct |
18 |
Correct |
0 ms |
344 KB |
Output is correct |
19 |
Correct |
0 ms |
344 KB |
Output is correct |
20 |
Incorrect |
1 ms |
600 KB |
Output isn't correct |
21 |
Halted |
0 ms |
0 KB |
- |