oj.uz

Submission #607233

# Submission time Handle Problem Language Result Execution time Memory
607233 2022-07-26T13:43:04 Z 1bin Magic Tree (CEOI19_magictree) C++14
3 / 100
 131 ms 36000 KB 
    #include <bits/stdc++.h>

using namespace std;

#define all(v) v.begin(), v.end()
typedef long long ll;
const int NMAX = 1e5 + 5;
ll n, m, k, a, b, c, p, d[NMAX], w[NMAX], ii[NMAX];
vector<int> adj[NMAX];
map<int, ll> mp[NMAX];

void merge(int a, int b){
    if(mp[ii[a]].size() < mp[ii[b]].size()) swap(ii[a], ii[b]);
    for(auto&[x, y] : mp[ii[b]]) mp[ii[a]][x] += y;
    return;
}

void dfs(int x){
    for(int & nx : adj[x]) {
        dfs(nx); merge(x, nx);
    }
    if(w[x]){
        mp[ii[x]][d[x]] += w[x];
        auto it = mp[ii[x]].upper_bound(d[x]);
        if(it != mp[ii[x]].end()) it->second -= w[x];
    }
    return;
}

int main(void){
    ios::sync_with_stdio(0); cin.tie(0); cout.tie(0);
    
    cin >> n >> m >> k;
    for(int i = 1; i <= n; i++) ii[i] = i;
    for(int i = 2; i <= n; i++){
        cin >> p;
        adj[p].emplace_back(i);
    }
    while(m--){
        cin >> a;
        cin >> d[a] >> w[a];
    }
    dfs(1);
    ll ans = 0;
    for(auto& [x, y] : mp[ii[1]]) ans += y;
    cout << ans;
    return 0;
}

Compilation message

magictree.cpp: In function 'void merge(int, int)':
magictree.cpp:14:14: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   14 |     for(auto&[x, y] : mp[ii[b]]) mp[ii[a]][x] += y;
      |              ^
magictree.cpp: In function 'int main()':
magictree.cpp:45:15: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   45 |     for(auto& [x, y] : mp[ii[1]]) ans += y;
      |               ^

Subtask #1
0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 7380 KB Output is correct
2 Incorrect 9 ms 7380 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #2
3.0 / 3.0

# Verdict Execution time Memory Grader output
1 Correct 63 ms 18920 KB Output is correct
2 Correct 36 ms 17612 KB Output is correct
3 Correct 131 ms 36000 KB Output is correct
4 Correct 77 ms 19452 KB Output is correct
5 Correct 115 ms 20544 KB Output is correct

Subtask #3
0 / 11.0

# Verdict Execution time Memory Grader output
1 Incorrect 4 ms 7508 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 12.0

# Verdict Execution time Memory Grader output
1 Incorrect 64 ms 15172 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 7380 KB Output is correct
2 Incorrect 9 ms 7380 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #6
0 / 13.0

# Verdict Execution time Memory Grader output
1 Incorrect 8 ms 8276 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #7
0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 7380 KB Output is correct
2 Incorrect 9 ms 7380 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #8
0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 7380 KB Output is correct
2 Incorrect 9 ms 7380 KB Output isn't correct
3 Halted 0 ms 0 KB -