#include <bits/stdc++.h>
using namespace std;
const int LIM = 1e6;
vector<array<int, 2>> a(LIM), g[LIM];
bitset<LIM> vis;
pair<long long, int> c;
long long toRoot;
int r;
void dfs(int u, int p, long long d){
vis[u] = 1, c = max(c, {d, u});
for(auto &[v, w] : g[u]) if(v != p){
if(v == r) toRoot = d;
else dfs(v, u, d + (long long)w);
}
}
int main(){
ios_base::sync_with_stdio(0); cin.tie(0);
int n; cin >> n;
for(int i=0; i<n; ++i){
cin >> a[i][0] >> a[i][1];
g[--a[i][0]].push_back({i, a[i][1]});
}
long long ans = 0;
for(r=0; r<n; ++r){
if(vis[r]) continue;
dfs(r, r, 0);
long long curr = toRoot + a[r][1];
dfs(c.second, -1, 0);
curr = max(curr, c.first);
ans += curr;
}
cout << ans;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
24 ms |
31576 KB |
Output isn't correct |
2 |
Incorrect |
20 ms |
31648 KB |
Output isn't correct |
3 |
Incorrect |
23 ms |
31648 KB |
Output isn't correct |
4 |
Incorrect |
20 ms |
31564 KB |
Output isn't correct |
5 |
Runtime error |
84 ms |
131076 KB |
Execution killed with signal 9 |
6 |
Runtime error |
75 ms |
131076 KB |
Execution killed with signal 9 |
7 |
Runtime error |
81 ms |
131076 KB |
Execution killed with signal 9 |
8 |
Runtime error |
84 ms |
131076 KB |
Execution killed with signal 9 |
9 |
Runtime error |
81 ms |
131076 KB |
Execution killed with signal 9 |
10 |
Incorrect |
20 ms |
31636 KB |
Output isn't correct |
11 |
Incorrect |
19 ms |
31560 KB |
Output isn't correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
22 ms |
31692 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Runtime error |
92 ms |
131076 KB |
Execution killed with signal 9 |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Runtime error |
142 ms |
131076 KB |
Execution killed with signal 9 |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
42 ms |
34056 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
94 ms |
38868 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Runtime error |
191 ms |
131076 KB |
Execution killed with signal 9 |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
347 ms |
55388 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
434 ms |
125372 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |