oj.uz

답안 #786381

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
786381 2023-07-18T07:18:17 Z 이동현(#10029) Paths (RMI21_paths) C++17
12 / 100
 104 ms 19780 KB 
#include <bits/stdc++.h>
#pragma GCC optimize("O3")
#pragma GCC optimize("Ofast")
#pragma GCC optimize("unroll-loops")
#define int long long
using namespace std;

signed main(){
    ios_base::sync_with_stdio(false);
    cin.tie(0);

    int n, k;
    cin >> n >> k;
    vector<vector<vector<int>>> way(n);
    for(int i = 1; i < n; ++i){
        int x, y, z;
        cin >> x >> y >> z;
        --x, --y;
        way[x].push_back({y, z});
        way[y].push_back({x, z});
    }

    auto getdis = [&](auto&&self, int x, int pr, int ndis, vector<int>&vc)->void{
        vc[x] = ndis;
        for(auto&nxt:way[x]){
            if(nxt[0] == pr){
                continue;
            }
            self(self, nxt[0], x, ndis + nxt[1], vc);
        }
    };

    vector<int> imsi(n);
    getdis(getdis, 0, -1, 0, imsi);

    pair<int, int> mx1 = {-1, -1};
    for(int i = 0; i < n; ++i){
        mx1 = max(mx1, {imsi[i], i});
    }

    vector<int> dis1(n), dis2(n);
    getdis(getdis, mx1.second, -1, 0, dis1);

    pair<int, int> mx2 = {-1, -1};
    for(int i = 0; i < n; ++i){
        mx2 = max(mx2, {dis1[i], i});
    }

    getdis(getdis, mx2.second, -1, 0, dis2);

    for(int i = 0; i < n; ++i){
        cout << max(dis1[i], dis2[i]) << '\n';
    }

    return 0;
}

Subtask #1
0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 0 ms 212 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 0 ms 212 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 17.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 0 ms 212 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 0 ms 212 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
12.0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 89 ms 18944 KB Output is correct
2 Correct 104 ms 19780 KB Output is correct
3 Correct 66 ms 18892 KB Output is correct
4 Correct 98 ms 18676 KB Output is correct
5 Correct 90 ms 19432 KB Output is correct
6 Correct 88 ms 18464 KB Output is correct

Subtask #6
0 / 32.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 0 ms 212 KB Output isn't correct
2 Halted 0 ms 0 KB -