oj.uz

Submission #1113030

# Submission time Handle Problem Language Result Execution time Memory
1113030 2024-11-15T13:03:23 Z guagua0407 Fireworks (APIO16_fireworks) C++17
7 / 100
 12 ms 14580 KB 
//#pragma GCC optimize("O3")
#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define int ll
#define pii pair<int,int>
#define f first
#define s second
#define all(x) x.begin(),x.end()
#define _ ios::sync_with_stdio(0); cin.tie(0); cout.tie(0);

int dx[4]={0,0,1,-1};
int dy[4]={1,-1,0,0};

void setIO(string s) {
    freopen((s + ".in").c_str(), "r", stdin);
    freopen((s + ".out").c_str(), "w", stdout);
}

const int mxn=6e5+5;
vector<pair<int,int>> adj[mxn];
ll d[mxn];
ll val[mxn];
pair<ll,ll> pt[mxn];
int n,m;

void dfs(int v,int p=0){
    if(v>n){
        return;
    }
    vector<ll> vec;
    for(auto u:adj[v]){
        dfs(u.f,v);
        vec.push_back(pt[u.f].f+u.s);
        vec.push_back(pt[u.f].s+u.s);
    }
    sort(all(vec));
    int sz=(int)vec.size();
    ll x=vec[sz/2];
    for(auto u:adj[v]){
        val[v]+=val[u.f];
        if(x<(pt[u.f].f+u.s)){
            val[v]+=(pt[u.f].f+u.s)-x;
        }
        else if(x>(pt[u.f].s+u.s)){
            val[v]+=x-(pt[u.f].s+u.s);
        }
    }
    pt[v]={vec[sz/2-1],vec[sz/2]};
}

signed main() {_
    cin>>n>>m;
    for(int i=2;i<=n+m;i++){
        int p,c;
        cin>>p>>c;
        adj[p].push_back({i,c});
    }
    dfs(1);
    cout<<val[1]<<'\n';
    return 0;
}
//maybe its multiset not set
//yeeorz
//diaoborz

Compilation message

fireworks.cpp: In function 'void setIO(std::string)':
fireworks.cpp:16:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   16 |     freopen((s + ".in").c_str(), "r", stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
fireworks.cpp:17:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   17 |     freopen((s + ".out").c_str(), "w", stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 14416 KB Output is correct
2 Correct 10 ms 14428 KB Output is correct
3 Correct 10 ms 14416 KB Output is correct
4 Correct 10 ms 14416 KB Output is correct
5 Correct 12 ms 14580 KB Output is correct
6 Correct 10 ms 14416 KB Output is correct
7 Correct 12 ms 14416 KB Output is correct
8 Correct 9 ms 14416 KB Output is correct
9 Correct 9 ms 14416 KB Output is correct
10 Correct 10 ms 14416 KB Output is correct

Subtask #2
0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 10 ms 14416 KB Output is correct
2 Correct 10 ms 14416 KB Output is correct
3 Incorrect 10 ms 14416 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #3
0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 14416 KB Output is correct
2 Correct 10 ms 14428 KB Output is correct
3 Correct 10 ms 14416 KB Output is correct
4 Correct 10 ms 14416 KB Output is correct
5 Correct 12 ms 14580 KB Output is correct
6 Correct 10 ms 14416 KB Output is correct
7 Correct 12 ms 14416 KB Output is correct
8 Correct 9 ms 14416 KB Output is correct
9 Correct 9 ms 14416 KB Output is correct
10 Correct 10 ms 14416 KB Output is correct
11 Correct 10 ms 14416 KB Output is correct
12 Correct 10 ms 14416 KB Output is correct
13 Incorrect 10 ms 14416 KB Output isn't correct
14 Halted 0 ms 0 KB -

Subtask #4
0 / 45.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 14416 KB Output is correct
2 Correct 10 ms 14428 KB Output is correct
3 Correct 10 ms 14416 KB Output is correct
4 Correct 10 ms 14416 KB Output is correct
5 Correct 12 ms 14580 KB Output is correct
6 Correct 10 ms 14416 KB Output is correct
7 Correct 12 ms 14416 KB Output is correct
8 Correct 9 ms 14416 KB Output is correct
9 Correct 9 ms 14416 KB Output is correct
10 Correct 10 ms 14416 KB Output is correct
11 Correct 10 ms 14416 KB Output is correct
12 Correct 10 ms 14416 KB Output is correct
13 Incorrect 10 ms 14416 KB Output isn't correct
14 Halted 0 ms 0 KB -