#include <bits/stdc++.h>
using i64 = long long;
constexpr i64 inf = 2e18 + 100;
int main(){
i64 n, A, B;
std::cin >> n >> A >> B;
i64 gcd = std::__gcd(A, B + 1);
i64 cycle = A / gcd;
if (inf / gcd < B) {
cycle = inf;
} else {
cycle *= B;
}
std::vector<std::pair<i64, i64>> v;
for (int i = 0; i < n; i++) {
i64 l, r;
std::cin >> l >> r;
l %= cycle;
r %= cycle;
if (r - l + 1 >= cycle) {
std::cout << cycle << "\n";
return 0;
}
if (l <= r) {
v.emplace_back(l, r);
} else {
v.emplace_back(0, r);
v.emplace_back(l, cycle - 1);
}
}
sort(v.begin(), v.end());
std::vector<std::pair<i64, i64>> nw;
nw.push_back(v[0]);
for (int i = 1; i < int(v.size()); i++) {
if (nw[nw.size() - 1].second >= v[i].first) {
nw[nw.size() - 1].first = std::min(nw[nw.size() - 1].first, v[i].first);
nw[nw.size() - 1].second = std::max(nw[nw.size() - 1].second, v[i].second);
} else {
nw.emplace_back(v[i]);
}
}
i64 ans = 0;
for (auto [l, r] : nw) {
ans += r - l + 1;
}
std::cout << ans << '\n';
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
204 KB |
Output is correct |
2 |
Correct |
16 ms |
1100 KB |
Output is correct |
3 |
Correct |
16 ms |
1192 KB |
Output is correct |
4 |
Correct |
1 ms |
204 KB |
Output is correct |
5 |
Correct |
1 ms |
204 KB |
Output is correct |
6 |
Correct |
1 ms |
292 KB |
Output is correct |
7 |
Correct |
1 ms |
204 KB |
Output is correct |
8 |
Correct |
1 ms |
204 KB |
Output is correct |
9 |
Correct |
1 ms |
204 KB |
Output is correct |
10 |
Correct |
1 ms |
288 KB |
Output is correct |
11 |
Correct |
1 ms |
204 KB |
Output is correct |
12 |
Correct |
1 ms |
204 KB |
Output is correct |
13 |
Correct |
1 ms |
288 KB |
Output is correct |
14 |
Correct |
1 ms |
204 KB |
Output is correct |
15 |
Correct |
1 ms |
292 KB |
Output is correct |
16 |
Correct |
16 ms |
1152 KB |
Output is correct |
17 |
Correct |
155 ms |
8612 KB |
Output is correct |
18 |
Incorrect |
1 ms |
204 KB |
Output isn't correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
204 KB |
Output is correct |
2 |
Incorrect |
1 ms |
204 KB |
Output isn't correct |
3 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
204 KB |
Output is correct |
2 |
Correct |
2 ms |
332 KB |
Output is correct |
3 |
Correct |
2 ms |
332 KB |
Output is correct |
4 |
Correct |
2 ms |
332 KB |
Output is correct |
5 |
Correct |
1132 ms |
21700 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
204 KB |
Output is correct |
2 |
Correct |
1553 ms |
60480 KB |
Output is correct |
3 |
Correct |
1496 ms |
60816 KB |
Output is correct |
4 |
Correct |
1576 ms |
60604 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
204 KB |
Output is correct |
2 |
Correct |
1553 ms |
60480 KB |
Output is correct |
3 |
Correct |
1496 ms |
60816 KB |
Output is correct |
4 |
Correct |
1576 ms |
60604 KB |
Output is correct |
5 |
Correct |
1 ms |
204 KB |
Output is correct |
6 |
Correct |
1563 ms |
60676 KB |
Output is correct |
7 |
Correct |
1502 ms |
42516 KB |
Output is correct |
8 |
Correct |
1508 ms |
42320 KB |
Output is correct |
9 |
Correct |
1528 ms |
42268 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
204 KB |
Output is correct |
2 |
Correct |
1553 ms |
60480 KB |
Output is correct |
3 |
Correct |
1496 ms |
60816 KB |
Output is correct |
4 |
Correct |
1576 ms |
60604 KB |
Output is correct |
5 |
Correct |
1 ms |
204 KB |
Output is correct |
6 |
Correct |
151 ms |
8644 KB |
Output is correct |
7 |
Correct |
177 ms |
8536 KB |
Output is correct |
8 |
Correct |
148 ms |
8564 KB |
Output is correct |
9 |
Correct |
155 ms |
8632 KB |
Output is correct |
10 |
Correct |
151 ms |
8600 KB |
Output is correct |
11 |
Correct |
154 ms |
8544 KB |
Output is correct |
12 |
Correct |
148 ms |
8544 KB |
Output is correct |
13 |
Correct |
175 ms |
8672 KB |
Output is correct |
14 |
Correct |
152 ms |
8572 KB |
Output is correct |
15 |
Correct |
153 ms |
8748 KB |
Output is correct |
16 |
Correct |
159 ms |
8728 KB |
Output is correct |
17 |
Correct |
166 ms |
8556 KB |
Output is correct |
18 |
Correct |
1506 ms |
60656 KB |
Output is correct |
19 |
Correct |
1500 ms |
60476 KB |
Output is correct |
20 |
Correct |
1560 ms |
60556 KB |
Output is correct |
21 |
Correct |
153 ms |
8600 KB |
Output is correct |
22 |
Correct |
147 ms |
8604 KB |
Output is correct |
23 |
Correct |
494 ms |
18528 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
204 KB |
Output is correct |
2 |
Correct |
155 ms |
8676 KB |
Output is correct |
3 |
Correct |
160 ms |
8644 KB |
Output is correct |
4 |
Correct |
1584 ms |
60416 KB |
Output is correct |
5 |
Correct |
154 ms |
8624 KB |
Output is correct |
6 |
Correct |
160 ms |
8604 KB |
Output is correct |
7 |
Correct |
181 ms |
8572 KB |
Output is correct |
8 |
Correct |
156 ms |
8728 KB |
Output is correct |
9 |
Correct |
151 ms |
8532 KB |
Output is correct |
10 |
Correct |
152 ms |
8612 KB |
Output is correct |
11 |
Correct |
154 ms |
8516 KB |
Output is correct |
12 |
Correct |
155 ms |
8724 KB |
Output is correct |
13 |
Correct |
158 ms |
8624 KB |
Output is correct |
14 |
Correct |
1540 ms |
60540 KB |
Output is correct |
15 |
Correct |
175 ms |
8640 KB |
Output is correct |
16 |
Correct |
1477 ms |
60484 KB |
Output is correct |
17 |
Correct |
1490 ms |
60584 KB |
Output is correct |
18 |
Incorrect |
1 ms |
204 KB |
Output isn't correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
204 KB |
Output is correct |
2 |
Correct |
16 ms |
1100 KB |
Output is correct |
3 |
Correct |
16 ms |
1192 KB |
Output is correct |
4 |
Correct |
1 ms |
204 KB |
Output is correct |
5 |
Correct |
1 ms |
204 KB |
Output is correct |
6 |
Correct |
1 ms |
292 KB |
Output is correct |
7 |
Correct |
1 ms |
204 KB |
Output is correct |
8 |
Correct |
1 ms |
204 KB |
Output is correct |
9 |
Correct |
1 ms |
204 KB |
Output is correct |
10 |
Correct |
1 ms |
288 KB |
Output is correct |
11 |
Correct |
1 ms |
204 KB |
Output is correct |
12 |
Correct |
1 ms |
204 KB |
Output is correct |
13 |
Correct |
1 ms |
288 KB |
Output is correct |
14 |
Correct |
1 ms |
204 KB |
Output is correct |
15 |
Correct |
1 ms |
292 KB |
Output is correct |
16 |
Correct |
16 ms |
1152 KB |
Output is correct |
17 |
Correct |
155 ms |
8612 KB |
Output is correct |
18 |
Incorrect |
1 ms |
204 KB |
Output isn't correct |