# | 제출 시각 | 아이디 | 문제 | 언어 | 결과 | 실행 시간 | 메모리 |
---|---|---|---|---|---|---|---|
88904 | 2018-12-09T18:51:24 Z | sailormoon | Triumphal arch (POI13_luk) | C++14 | 1388 ms | 39532 KB |
#include <string> #include <algorithm> #include <iostream> #include <vector> using namespace std; int canHandle(int v, int crs, bool visited[]); vector<vector<int>> graph (1000001); // size int main() { int n, a, b, start = 0, midpoint, end, cities; // n -> towns, a -> from, b -> to scanf("%d", &n); cities = n; // for further usage end = n; // last point for (int i = 1; i < n; i++) { scanf("%d %d", &a, &b); graph[a].push_back(b); graph[b].push_back(a); } // binary search for sufficient amount of crews while (start < end) { bool visited[1000001]; midpoint = (start + end) / 2; for (int i = 0; i < cities; i++) visited[i] = false; // clear array if (canHandle(1, midpoint, visited) == 0) end = midpoint; else start = midpoint + 1; } printf("%d\n", start); return 0; } int canHandle(int v, int crs, bool visited[]) { int num_children = 0, need_crews = 0; visited[v] = true; for (int i = 0; i < graph[v].size(); i++) { if (!visited[graph[v][i]]) { num_children++; need_crews += canHandle(graph[v][i], crs, visited); } } if (num_children + need_crews - crs <= 0) return 0; return num_children + need_crews - crs; }
Compilation message
# | 결과 | 실행 시간 | 메모리 | Grader output |
---|---|---|---|---|
1 | Correct | 25 ms | 23800 KB | Output is correct |
2 | Correct | 25 ms | 23956 KB | Output is correct |
3 | Correct | 26 ms | 23956 KB | Output is correct |
# | 결과 | 실행 시간 | 메모리 | Grader output |
---|---|---|---|---|
1 | Correct | 21 ms | 23956 KB | Output is correct |
2 | Correct | 22 ms | 24008 KB | Output is correct |
3 | Correct | 21 ms | 24008 KB | Output is correct |
4 | Incorrect | 26 ms | 24008 KB | Output isn't correct |
5 | Halted | 0 ms | 0 KB | - |
# | 결과 | 실행 시간 | 메모리 | Grader output |
---|---|---|---|---|
1 | Correct | 25 ms | 24008 KB | Output is correct |
2 | Correct | 26 ms | 24008 KB | Output is correct |
3 | Correct | 27 ms | 24092 KB | Output is correct |
# | 결과 | 실행 시간 | 메모리 | Grader output |
---|---|---|---|---|
1 | Correct | 25 ms | 24092 KB | Output is correct |
2 | Correct | 26 ms | 24092 KB | Output is correct |
3 | Correct | 28 ms | 24092 KB | Output is correct |
# | 결과 | 실행 시간 | 메모리 | Grader output |
---|---|---|---|---|
1 | Correct | 37 ms | 24392 KB | Output is correct |
2 | Correct | 34 ms | 24612 KB | Output is correct |
3 | Correct | 34 ms | 24612 KB | Output is correct |
# | 결과 | 실행 시간 | 메모리 | Grader output |
---|---|---|---|---|
1 | Correct | 57 ms | 25008 KB | Output is correct |
2 | Correct | 62 ms | 25952 KB | Output is correct |
3 | Correct | 43 ms | 25952 KB | Output is correct |
# | 결과 | 실행 시간 | 메모리 | Grader output |
---|---|---|---|---|
1 | Correct | 168 ms | 27468 KB | Output is correct |
2 | Correct | 157 ms | 29360 KB | Output is correct |
3 | Correct | 105 ms | 29360 KB | Output is correct |
# | 결과 | 실행 시간 | 메모리 | Grader output |
---|---|---|---|---|
1 | Correct | 678 ms | 30932 KB | Output is correct |
2 | Correct | 652 ms | 35436 KB | Output is correct |
3 | Correct | 374 ms | 35436 KB | Output is correct |
# | 결과 | 실행 시간 | 메모리 | Grader output |
---|---|---|---|---|
1 | Correct | 1388 ms | 35436 KB | Output is correct |
# | 결과 | 실행 시간 | 메모리 | Grader output |
---|---|---|---|---|
1 | Correct | 1170 ms | 35436 KB | Output is correct |
2 | Correct | 722 ms | 39532 KB | Output is correct |
3 | Correct | 481 ms | 39532 KB | Output is correct |