#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef __int128 ll2;
int main () {
ll n, a, b; cin >> n >> a >> b;
ll2 u = a; u *= b; u /= __gcd(a, b + 1);
vector <pair <ll, ll>> arr(n);
bool flag = 0;
for (auto &[x, y] : arr) {
cin >> x >> y;
flag |= y - x + 1 >= u;
}
if (flag) {
cout << (ll)u << '\n';
return 0;
}
vector <pair <ll2, ll2>> intervals;
for (auto [x, y] : arr) {
ll2 g = x % u, h = y % u;
if (g <= h) {
intervals.push_back({g, h});
} else {
intervals.push_back({g, u - 1});
intervals.push_back({0, h});
}
}
sort(intervals.begin(), intervals.end(), [] (pair <ll2, ll2> &x, pair <ll2, ll2> &y) {
return x.first == y.first ? x.second > y.second : x.first < y.first;
});
stack <pair <ll2, ll2>> dd;
for (auto &[x, y] : intervals) {
while (!dd.empty() && !(dd.top().first > y || dd.top().second < x)) {
x = min(x, dd.top().first); y = max(y, dd.top().second);
dd.pop();
}
dd.push({x, y});
}
ll2 sum = 0;
while (!dd.empty()) {
auto k = dd.top(); dd.pop();
sum += k.second - k.first + 1;
}
cout << ll(sum) << '\n';
}
Compilation message
strange_device.cpp: In function 'int main()':
strange_device.cpp:10:16: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
10 | for (auto &[x, y] : arr) {
| ^
strange_device.cpp:19:15: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
19 | for (auto [x, y] : arr) {
| ^
strange_device.cpp:32:16: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
32 | for (auto &[x, y] : intervals) {
| ^
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
348 KB |
Output is correct |
2 |
Correct |
10 ms |
1240 KB |
Output is correct |
3 |
Correct |
11 ms |
1496 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 |
0 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 |
0 ms |
348 KB |
Output is correct |
16 |
Correct |
10 ms |
1496 KB |
Output is correct |
17 |
Correct |
112 ms |
10688 KB |
Output is correct |
18 |
Correct |
0 ms |
348 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
348 KB |
Output is correct |
2 |
Correct |
0 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 |
0 ms |
348 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
348 KB |
Output is correct |
2 |
Correct |
2 ms |
344 KB |
Output is correct |
3 |
Correct |
1 ms |
348 KB |
Output is correct |
4 |
Correct |
1 ms |
348 KB |
Output is correct |
5 |
Correct |
915 ms |
62772 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
348 KB |
Output is correct |
2 |
Correct |
1034 ms |
80040 KB |
Output is correct |
3 |
Correct |
1067 ms |
117844 KB |
Output is correct |
4 |
Correct |
1037 ms |
117284 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
348 KB |
Output is correct |
2 |
Correct |
1034 ms |
80040 KB |
Output is correct |
3 |
Correct |
1067 ms |
117844 KB |
Output is correct |
4 |
Correct |
1037 ms |
117284 KB |
Output is correct |
5 |
Correct |
0 ms |
344 KB |
Output is correct |
6 |
Correct |
1069 ms |
117464 KB |
Output is correct |
7 |
Correct |
1070 ms |
117668 KB |
Output is correct |
8 |
Correct |
1045 ms |
118676 KB |
Output is correct |
9 |
Correct |
1102 ms |
118596 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
348 KB |
Output is correct |
2 |
Correct |
1034 ms |
80040 KB |
Output is correct |
3 |
Correct |
1067 ms |
117844 KB |
Output is correct |
4 |
Correct |
1037 ms |
117284 KB |
Output is correct |
5 |
Correct |
0 ms |
344 KB |
Output is correct |
6 |
Correct |
103 ms |
12736 KB |
Output is correct |
7 |
Correct |
106 ms |
12736 KB |
Output is correct |
8 |
Correct |
102 ms |
12992 KB |
Output is correct |
9 |
Correct |
106 ms |
12220 KB |
Output is correct |
10 |
Correct |
105 ms |
11964 KB |
Output is correct |
11 |
Correct |
103 ms |
11964 KB |
Output is correct |
12 |
Correct |
102 ms |
12220 KB |
Output is correct |
13 |
Correct |
108 ms |
12476 KB |
Output is correct |
14 |
Correct |
117 ms |
11952 KB |
Output is correct |
15 |
Correct |
108 ms |
13228 KB |
Output is correct |
16 |
Correct |
114 ms |
12480 KB |
Output is correct |
17 |
Correct |
109 ms |
11936 KB |
Output is correct |
18 |
Correct |
1050 ms |
118304 KB |
Output is correct |
19 |
Correct |
1043 ms |
117156 KB |
Output is correct |
20 |
Correct |
1133 ms |
117668 KB |
Output is correct |
21 |
Correct |
113 ms |
11964 KB |
Output is correct |
22 |
Correct |
100 ms |
12992 KB |
Output is correct |
23 |
Correct |
330 ms |
35940 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
348 KB |
Output is correct |
2 |
Correct |
110 ms |
8256 KB |
Output is correct |
3 |
Correct |
107 ms |
12992 KB |
Output is correct |
4 |
Correct |
1172 ms |
118092 KB |
Output is correct |
5 |
Correct |
110 ms |
11932 KB |
Output is correct |
6 |
Correct |
106 ms |
11964 KB |
Output is correct |
7 |
Correct |
106 ms |
11952 KB |
Output is correct |
8 |
Correct |
107 ms |
11936 KB |
Output is correct |
9 |
Correct |
106 ms |
12044 KB |
Output is correct |
10 |
Correct |
113 ms |
12040 KB |
Output is correct |
11 |
Correct |
107 ms |
12064 KB |
Output is correct |
12 |
Correct |
102 ms |
12572 KB |
Output is correct |
13 |
Correct |
107 ms |
12732 KB |
Output is correct |
14 |
Correct |
1111 ms |
117272 KB |
Output is correct |
15 |
Correct |
106 ms |
11700 KB |
Output is correct |
16 |
Correct |
1039 ms |
118152 KB |
Output is correct |
17 |
Correct |
1038 ms |
117212 KB |
Output is correct |
18 |
Correct |
0 ms |
348 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
348 KB |
Output is correct |
2 |
Correct |
10 ms |
1240 KB |
Output is correct |
3 |
Correct |
11 ms |
1496 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 |
0 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 |
0 ms |
348 KB |
Output is correct |
16 |
Correct |
10 ms |
1496 KB |
Output is correct |
17 |
Correct |
112 ms |
10688 KB |
Output is correct |
18 |
Correct |
0 ms |
348 KB |
Output is correct |
19 |
Correct |
0 ms |
348 KB |
Output is correct |
20 |
Correct |
0 ms |
348 KB |
Output is correct |
21 |
Correct |
0 ms |
348 KB |
Output is correct |
22 |
Correct |
0 ms |
348 KB |
Output is correct |
23 |
Correct |
0 ms |
348 KB |
Output is correct |
24 |
Correct |
0 ms |
348 KB |
Output is correct |
25 |
Correct |
2 ms |
344 KB |
Output is correct |
26 |
Correct |
1 ms |
348 KB |
Output is correct |
27 |
Correct |
1 ms |
348 KB |
Output is correct |
28 |
Correct |
915 ms |
62772 KB |
Output is correct |
29 |
Correct |
0 ms |
348 KB |
Output is correct |
30 |
Correct |
1034 ms |
80040 KB |
Output is correct |
31 |
Correct |
1067 ms |
117844 KB |
Output is correct |
32 |
Correct |
1037 ms |
117284 KB |
Output is correct |
33 |
Correct |
0 ms |
344 KB |
Output is correct |
34 |
Correct |
1069 ms |
117464 KB |
Output is correct |
35 |
Correct |
1070 ms |
117668 KB |
Output is correct |
36 |
Correct |
1045 ms |
118676 KB |
Output is correct |
37 |
Correct |
1102 ms |
118596 KB |
Output is correct |
38 |
Correct |
0 ms |
344 KB |
Output is correct |
39 |
Correct |
103 ms |
12736 KB |
Output is correct |
40 |
Correct |
106 ms |
12736 KB |
Output is correct |
41 |
Correct |
102 ms |
12992 KB |
Output is correct |
42 |
Correct |
106 ms |
12220 KB |
Output is correct |
43 |
Correct |
105 ms |
11964 KB |
Output is correct |
44 |
Correct |
103 ms |
11964 KB |
Output is correct |
45 |
Correct |
102 ms |
12220 KB |
Output is correct |
46 |
Correct |
108 ms |
12476 KB |
Output is correct |
47 |
Correct |
117 ms |
11952 KB |
Output is correct |
48 |
Correct |
108 ms |
13228 KB |
Output is correct |
49 |
Correct |
114 ms |
12480 KB |
Output is correct |
50 |
Correct |
109 ms |
11936 KB |
Output is correct |
51 |
Correct |
1050 ms |
118304 KB |
Output is correct |
52 |
Correct |
1043 ms |
117156 KB |
Output is correct |
53 |
Correct |
1133 ms |
117668 KB |
Output is correct |
54 |
Correct |
113 ms |
11964 KB |
Output is correct |
55 |
Correct |
100 ms |
12992 KB |
Output is correct |
56 |
Correct |
330 ms |
35940 KB |
Output is correct |
57 |
Correct |
0 ms |
348 KB |
Output is correct |
58 |
Correct |
110 ms |
8256 KB |
Output is correct |
59 |
Correct |
107 ms |
12992 KB |
Output is correct |
60 |
Correct |
1172 ms |
118092 KB |
Output is correct |
61 |
Correct |
110 ms |
11932 KB |
Output is correct |
62 |
Correct |
106 ms |
11964 KB |
Output is correct |
63 |
Correct |
106 ms |
11952 KB |
Output is correct |
64 |
Correct |
107 ms |
11936 KB |
Output is correct |
65 |
Correct |
106 ms |
12044 KB |
Output is correct |
66 |
Correct |
113 ms |
12040 KB |
Output is correct |
67 |
Correct |
107 ms |
12064 KB |
Output is correct |
68 |
Correct |
102 ms |
12572 KB |
Output is correct |
69 |
Correct |
107 ms |
12732 KB |
Output is correct |
70 |
Correct |
1111 ms |
117272 KB |
Output is correct |
71 |
Correct |
106 ms |
11700 KB |
Output is correct |
72 |
Correct |
1039 ms |
118152 KB |
Output is correct |
73 |
Correct |
1038 ms |
117212 KB |
Output is correct |
74 |
Correct |
0 ms |
348 KB |
Output is correct |
75 |
Correct |
0 ms |
348 KB |
Output is correct |
76 |
Correct |
0 ms |
348 KB |
Output is correct |
77 |
Correct |
0 ms |
348 KB |
Output is correct |
78 |
Correct |
0 ms |
348 KB |
Output is correct |
79 |
Correct |
11 ms |
1496 KB |
Output is correct |
80 |
Correct |
1175 ms |
117148 KB |
Output is correct |
81 |
Correct |
1173 ms |
117648 KB |
Output is correct |
82 |
Correct |
1104 ms |
118000 KB |
Output is correct |
83 |
Correct |
1119 ms |
118080 KB |
Output is correct |
84 |
Correct |
1112 ms |
117140 KB |
Output is correct |
85 |
Correct |
1096 ms |
118500 KB |
Output is correct |
86 |
Correct |
329 ms |
35768 KB |
Output is correct |
87 |
Correct |
0 ms |
344 KB |
Output is correct |