#include<bits/stdc++.h>
#define st first
#define nd second
#define all(x) (x).begin(), (x).end()
#define pb push_back
#define eb emplace_back
#define pp pop_back
#define mp make_pair
using namespace std;
using pii = pair<int, int>;
using ll = long long;
using vi = vector<int>;
using vii = vector<pii>;
void debug(){cerr<<"\n";}
template<typename H, typename... T>
void debug(H h, T... t){
cerr<<h;
if(sizeof...(t)){
cerr<<", ";
}
debug(t...);
}
#define deb(x...) cerr<<#x<<" = ";debug(x);
mt19937 rng(chrono::high_resolution_clock::now().time_since_epoch().count());
int main(){
int n;
ll a, b;
cin>>n>>a>>b;
if(b>=ll(1e18)/(a/gcd(a, b+1))){
ll s=0;
for(int i=0; i<n; i++){
ll l, r;
cin>>l>>r;
s+=r-l+1;
}
cout<<s;
return 0;
}
ll t=b*(a/__gcd(a, b+1));
vector<pair<ll, int> > V;
for(int i=0; i<n; i++){
ll l, r;
cin>>l>>r;
if(r-l+1>=t){
cout<<t;
return 0;
}
l%=t;
r%=t;
if(l<=r){
V.eb(l, 1);
V.eb(r+1, -1);
}
else{
V.eb(0, 1);
V.eb(r+1, -1);
V.eb(l, 1);
}
}
V.eb(t, 0);
sort(all(V));
ll s=0, prv=0;
int part=0;
for(auto i:V){
if(i.st!=prv){
if(part>0)s+=i.st-prv;
prv=i.st;
}
part+=i.nd;
}
cout<<s;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
212 KB |
Output is correct |
2 |
Correct |
11 ms |
1104 KB |
Output is correct |
3 |
Correct |
11 ms |
1104 KB |
Output is correct |
4 |
Correct |
0 ms |
304 KB |
Output is correct |
5 |
Correct |
1 ms |
212 KB |
Output is correct |
6 |
Correct |
0 ms |
212 KB |
Output is correct |
7 |
Correct |
1 ms |
212 KB |
Output is correct |
8 |
Correct |
1 ms |
212 KB |
Output is correct |
9 |
Correct |
0 ms |
212 KB |
Output is correct |
10 |
Correct |
0 ms |
212 KB |
Output is correct |
11 |
Correct |
0 ms |
212 KB |
Output is correct |
12 |
Correct |
0 ms |
212 KB |
Output is correct |
13 |
Correct |
1 ms |
304 KB |
Output is correct |
14 |
Correct |
1 ms |
212 KB |
Output is correct |
15 |
Correct |
1 ms |
212 KB |
Output is correct |
16 |
Correct |
11 ms |
1228 KB |
Output is correct |
17 |
Correct |
111 ms |
4780 KB |
Output is correct |
18 |
Correct |
0 ms |
212 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
300 KB |
Output is correct |
2 |
Correct |
0 ms |
212 KB |
Output is correct |
3 |
Correct |
0 ms |
212 KB |
Output is correct |
4 |
Correct |
0 ms |
212 KB |
Output is correct |
5 |
Correct |
0 ms |
212 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
212 KB |
Output is correct |
2 |
Correct |
2 ms |
340 KB |
Output is correct |
3 |
Correct |
1 ms |
340 KB |
Output is correct |
4 |
Correct |
1 ms |
368 KB |
Output is correct |
5 |
Correct |
807 ms |
56952 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
212 KB |
Output is correct |
2 |
Correct |
1084 ms |
33380 KB |
Output is correct |
3 |
Correct |
1110 ms |
69040 KB |
Output is correct |
4 |
Correct |
1079 ms |
68824 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
212 KB |
Output is correct |
2 |
Correct |
1084 ms |
33380 KB |
Output is correct |
3 |
Correct |
1110 ms |
69040 KB |
Output is correct |
4 |
Correct |
1079 ms |
68824 KB |
Output is correct |
5 |
Correct |
0 ms |
212 KB |
Output is correct |
6 |
Correct |
1058 ms |
69020 KB |
Output is correct |
7 |
Correct |
1048 ms |
68864 KB |
Output is correct |
8 |
Correct |
1088 ms |
69020 KB |
Output is correct |
9 |
Correct |
1170 ms |
68880 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
212 KB |
Output is correct |
2 |
Correct |
1084 ms |
33380 KB |
Output is correct |
3 |
Correct |
1110 ms |
69040 KB |
Output is correct |
4 |
Correct |
1079 ms |
68824 KB |
Output is correct |
5 |
Correct |
0 ms |
212 KB |
Output is correct |
6 |
Correct |
107 ms |
7228 KB |
Output is correct |
7 |
Correct |
108 ms |
7156 KB |
Output is correct |
8 |
Correct |
109 ms |
7204 KB |
Output is correct |
9 |
Correct |
111 ms |
7412 KB |
Output is correct |
10 |
Correct |
104 ms |
7216 KB |
Output is correct |
11 |
Correct |
104 ms |
7272 KB |
Output is correct |
12 |
Correct |
104 ms |
7180 KB |
Output is correct |
13 |
Correct |
120 ms |
7268 KB |
Output is correct |
14 |
Correct |
104 ms |
7200 KB |
Output is correct |
15 |
Correct |
112 ms |
7268 KB |
Output is correct |
16 |
Correct |
111 ms |
7264 KB |
Output is correct |
17 |
Correct |
108 ms |
7380 KB |
Output is correct |
18 |
Correct |
1062 ms |
68972 KB |
Output is correct |
19 |
Correct |
1070 ms |
68868 KB |
Output is correct |
20 |
Correct |
1178 ms |
68960 KB |
Output is correct |
21 |
Correct |
119 ms |
7272 KB |
Output is correct |
22 |
Correct |
104 ms |
7264 KB |
Output is correct |
23 |
Correct |
334 ms |
26640 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
212 KB |
Output is correct |
2 |
Correct |
113 ms |
4716 KB |
Output is correct |
3 |
Correct |
112 ms |
7368 KB |
Output is correct |
4 |
Correct |
1208 ms |
68888 KB |
Output is correct |
5 |
Correct |
109 ms |
7252 KB |
Output is correct |
6 |
Correct |
110 ms |
7260 KB |
Output is correct |
7 |
Correct |
109 ms |
7236 KB |
Output is correct |
8 |
Correct |
111 ms |
7188 KB |
Output is correct |
9 |
Correct |
109 ms |
7208 KB |
Output is correct |
10 |
Correct |
148 ms |
7244 KB |
Output is correct |
11 |
Correct |
113 ms |
7272 KB |
Output is correct |
12 |
Correct |
104 ms |
7264 KB |
Output is correct |
13 |
Correct |
111 ms |
7216 KB |
Output is correct |
14 |
Correct |
1211 ms |
68844 KB |
Output is correct |
15 |
Correct |
114 ms |
7212 KB |
Output is correct |
16 |
Correct |
1161 ms |
68892 KB |
Output is correct |
17 |
Correct |
1103 ms |
68804 KB |
Output is correct |
18 |
Correct |
1 ms |
212 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
212 KB |
Output is correct |
2 |
Correct |
11 ms |
1104 KB |
Output is correct |
3 |
Correct |
11 ms |
1104 KB |
Output is correct |
4 |
Correct |
0 ms |
304 KB |
Output is correct |
5 |
Correct |
1 ms |
212 KB |
Output is correct |
6 |
Correct |
0 ms |
212 KB |
Output is correct |
7 |
Correct |
1 ms |
212 KB |
Output is correct |
8 |
Correct |
1 ms |
212 KB |
Output is correct |
9 |
Correct |
0 ms |
212 KB |
Output is correct |
10 |
Correct |
0 ms |
212 KB |
Output is correct |
11 |
Correct |
0 ms |
212 KB |
Output is correct |
12 |
Correct |
0 ms |
212 KB |
Output is correct |
13 |
Correct |
1 ms |
304 KB |
Output is correct |
14 |
Correct |
1 ms |
212 KB |
Output is correct |
15 |
Correct |
1 ms |
212 KB |
Output is correct |
16 |
Correct |
11 ms |
1228 KB |
Output is correct |
17 |
Correct |
111 ms |
4780 KB |
Output is correct |
18 |
Correct |
0 ms |
212 KB |
Output is correct |
19 |
Correct |
0 ms |
300 KB |
Output is correct |
20 |
Correct |
0 ms |
212 KB |
Output is correct |
21 |
Correct |
0 ms |
212 KB |
Output is correct |
22 |
Correct |
0 ms |
212 KB |
Output is correct |
23 |
Correct |
0 ms |
212 KB |
Output is correct |
24 |
Correct |
1 ms |
212 KB |
Output is correct |
25 |
Correct |
2 ms |
340 KB |
Output is correct |
26 |
Correct |
1 ms |
340 KB |
Output is correct |
27 |
Correct |
1 ms |
368 KB |
Output is correct |
28 |
Correct |
807 ms |
56952 KB |
Output is correct |
29 |
Correct |
0 ms |
212 KB |
Output is correct |
30 |
Correct |
1084 ms |
33380 KB |
Output is correct |
31 |
Correct |
1110 ms |
69040 KB |
Output is correct |
32 |
Correct |
1079 ms |
68824 KB |
Output is correct |
33 |
Correct |
0 ms |
212 KB |
Output is correct |
34 |
Correct |
1058 ms |
69020 KB |
Output is correct |
35 |
Correct |
1048 ms |
68864 KB |
Output is correct |
36 |
Correct |
1088 ms |
69020 KB |
Output is correct |
37 |
Correct |
1170 ms |
68880 KB |
Output is correct |
38 |
Correct |
0 ms |
212 KB |
Output is correct |
39 |
Correct |
107 ms |
7228 KB |
Output is correct |
40 |
Correct |
108 ms |
7156 KB |
Output is correct |
41 |
Correct |
109 ms |
7204 KB |
Output is correct |
42 |
Correct |
111 ms |
7412 KB |
Output is correct |
43 |
Correct |
104 ms |
7216 KB |
Output is correct |
44 |
Correct |
104 ms |
7272 KB |
Output is correct |
45 |
Correct |
104 ms |
7180 KB |
Output is correct |
46 |
Correct |
120 ms |
7268 KB |
Output is correct |
47 |
Correct |
104 ms |
7200 KB |
Output is correct |
48 |
Correct |
112 ms |
7268 KB |
Output is correct |
49 |
Correct |
111 ms |
7264 KB |
Output is correct |
50 |
Correct |
108 ms |
7380 KB |
Output is correct |
51 |
Correct |
1062 ms |
68972 KB |
Output is correct |
52 |
Correct |
1070 ms |
68868 KB |
Output is correct |
53 |
Correct |
1178 ms |
68960 KB |
Output is correct |
54 |
Correct |
119 ms |
7272 KB |
Output is correct |
55 |
Correct |
104 ms |
7264 KB |
Output is correct |
56 |
Correct |
334 ms |
26640 KB |
Output is correct |
57 |
Correct |
0 ms |
212 KB |
Output is correct |
58 |
Correct |
113 ms |
4716 KB |
Output is correct |
59 |
Correct |
112 ms |
7368 KB |
Output is correct |
60 |
Correct |
1208 ms |
68888 KB |
Output is correct |
61 |
Correct |
109 ms |
7252 KB |
Output is correct |
62 |
Correct |
110 ms |
7260 KB |
Output is correct |
63 |
Correct |
109 ms |
7236 KB |
Output is correct |
64 |
Correct |
111 ms |
7188 KB |
Output is correct |
65 |
Correct |
109 ms |
7208 KB |
Output is correct |
66 |
Correct |
148 ms |
7244 KB |
Output is correct |
67 |
Correct |
113 ms |
7272 KB |
Output is correct |
68 |
Correct |
104 ms |
7264 KB |
Output is correct |
69 |
Correct |
111 ms |
7216 KB |
Output is correct |
70 |
Correct |
1211 ms |
68844 KB |
Output is correct |
71 |
Correct |
114 ms |
7212 KB |
Output is correct |
72 |
Correct |
1161 ms |
68892 KB |
Output is correct |
73 |
Correct |
1103 ms |
68804 KB |
Output is correct |
74 |
Correct |
1 ms |
212 KB |
Output is correct |
75 |
Correct |
1 ms |
212 KB |
Output is correct |
76 |
Correct |
1 ms |
212 KB |
Output is correct |
77 |
Correct |
1 ms |
300 KB |
Output is correct |
78 |
Correct |
1 ms |
212 KB |
Output is correct |
79 |
Correct |
14 ms |
1260 KB |
Output is correct |
80 |
Correct |
1267 ms |
68816 KB |
Output is correct |
81 |
Correct |
1252 ms |
68924 KB |
Output is correct |
82 |
Correct |
1231 ms |
68808 KB |
Output is correct |
83 |
Correct |
1193 ms |
68856 KB |
Output is correct |
84 |
Correct |
1249 ms |
68812 KB |
Output is correct |
85 |
Correct |
1206 ms |
68908 KB |
Output is correct |
86 |
Correct |
348 ms |
26676 KB |
Output is correct |
87 |
Correct |
1 ms |
212 KB |
Output is correct |