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Submission #520210

# Submission time Handle Problem Language Result Execution time Memory
520210 2022-01-28T20:42:13 Z sofapuden Islands (IOI08_islands) C++14
27 / 100
 986 ms 131076 KB 
#include<bits/stdc++.h>

using namespace std;

typedef long long ll;

ll mx = 0, bes = 0;
vector<vector<array<ll,2>>> gr;
vector<int> vis;

void dfs(int x, set<int> &s, ll dis){
    vis[x] = 1;
    s.insert(x);
    if(dis > mx){
        mx = dis;
        bes = x;
    }
    for(auto y : gr[x]){
        if(!s.count(y[0]))dfs(y[0],s,dis+y[1]);
    }
    s.erase(x);
}

int main()
{
    int n; cin >> n;
    gr.resize(n);
    vis.resize(n,0);
    for(int i = 0; i < n; ++i){
        ll a, b; cin >> a >> b;
        a--;
        gr[i].push_back({a,b});
        gr[a].push_back({i,b});
    }
    ll ans = 0;
    for(int i = 0; i < n; ++i){
        if(!vis[i]){
            mx = 0;
            set<int> s;
            dfs(i,s,0);
            dfs(bes,s,0);
            ans+=mx;
        }
    }
    cout << ans << '\n';
}

Subtask #1
27.0 / 33.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 208 KB Output is correct
2 Correct 1 ms 208 KB Output is correct
3 Incorrect 1 ms 336 KB Output isn't correct
4 Correct 0 ms 208 KB Output is correct
5 Correct 0 ms 208 KB Output is correct
6 Correct 1 ms 296 KB Output is correct
7 Correct 1 ms 208 KB Output is correct
8 Incorrect 0 ms 208 KB Output isn't correct
9 Correct 1 ms 208 KB Output is correct
10 Correct 1 ms 208 KB Output is correct
11 Correct 1 ms 292 KB Output is correct

Subtask #2
0 / 3.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 336 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 4.0

# Verdict Execution time Memory Grader output
1 Incorrect 3 ms 428 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 31 ms 1960 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 109 ms 7108 KB Output is correct
2 Incorrect 140 ms 11324 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #6
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 312 ms 20492 KB Output is correct
2 Correct 416 ms 28140 KB Output is correct
3 Incorrect 520 ms 40612 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #7
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 506 ms 38492 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #8
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 765 ms 90280 KB Output is correct
2 Runtime error 986 ms 131076 KB Execution killed with signal 9
3 Halted 0 ms 0 KB -

Subtask #9
0 / 10.0

# Verdict Execution time Memory Grader output
1 Runtime error 958 ms 131076 KB Execution killed with signal 9
2 Halted 0 ms 0 KB -