# | Submission time | Handle | Problem | Language | Result | Execution time | Memory |
---|---|---|---|---|---|---|---|
950492 | 2024-03-20T11:07:42 Z | LucaLucaM | Port Facility (JOI17_port_facility) | C++17 | 1 ms | 2392 KB |
#include <iostream> #include <cassert> #include <algorithm> #include <vector> #include <cstring> #include <set> typedef long long ll; const int NMAX = 1e6; const int mod = 1e9 + 7; int p[2 * NMAX + 1]; int add[2 * NMAX + 1]; int main() { std::ios_base::sync_with_stdio(false); std::cin.tie(0); int n; std::cin >> n; for (int i = 1; i <= n; i++) { int a, b; std::cin >> a >> b; p[a] = b; } /** 12345678 XYXZYTTZ cum verific daca pot in 1 mod? cum verifica daca pot in 2 moduri? [ ] [ ] [ ] cum verific sa nu am i < j < k si a[k] < b[i] < b[j] < b[k]? **/ int where = 2; int a[n], b[n]; for (int i = 1, k = 0; i <= 2 * n; i++) { if (!p[i]) { continue; } a[k] = i; b[k] = p[i]; k++; } assert(std::is_sorted(a, a + n)); for (int i = 0; i < n; i++) { for (int j = 0; j < n; j++) { for (int k = 0; k < n; k++) { if (a[i] < a[j] && a[j] < a[k] && a[i] < b[j] && b[j] < b[k] && b[k] < b[i]) { std::cout << 0; return 0; } } } } std::set<int> st; int answer = 1; for (int i = 1; i <= 2 * n; i++) { if (!p[i]) { continue; } while (!st.empty() && *st.begin() < i) { st.erase(st.begin()); } if (st.empty() || *st.begin() > p[i]) { answer = answer * 2 % mod; } st.insert(p[i]); } std::cout << answer; return 0; }
Compilation message
# | Verdict | Execution time | Memory | Grader output |
---|---|---|---|---|
1 | Incorrect | 1 ms | 2392 KB | Output isn't correct |
2 | Halted | 0 ms | 0 KB | - |
# | Verdict | Execution time | Memory | Grader output |
---|---|---|---|---|
1 | Incorrect | 1 ms | 2392 KB | Output isn't correct |
2 | Halted | 0 ms | 0 KB | - |
# | Verdict | Execution time | Memory | Grader output |
---|---|---|---|---|
1 | Incorrect | 1 ms | 2392 KB | Output isn't correct |
2 | Halted | 0 ms | 0 KB | - |
# | Verdict | Execution time | Memory | Grader output |
---|---|---|---|---|
1 | Incorrect | 1 ms | 2392 KB | Output isn't correct |
2 | Halted | 0 ms | 0 KB | - |