Submission #567464

#	Time	Username	Problem	Language	Result	Execution time	Memory
567464		losmi247	Crocodile's Underground City (IOI11_crocodile)	C++14	46 / 100	130 ms	262144 KiB

crocodile

#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
const int N = 1e5+45;

int n,m,k;
vector <pair<int,ll>> g[N];
bool ex[N];

ll dp1[N];
void dfs(int x,int par){
    vector <ll> svi;
    for(auto f : g[x]){
        int u = f.first;
        if(u == par) continue;
        ll w = f.second;
        dfs(u,x);
        svi.push_back(dp1[u]+w);
    }

    if(svi.empty()) return;
    //assert(svi.size() >= 2);

  	if(svi.size() == 1){
    	dp1[x] = 1e15;
      	return;
    }
  
    sort(svi.begin(),svi.end());
    dp1[x] = svi[1];
}

int zadrvo(){
    dfs(1,0);
    return dp1[1];
}

int travel_plan(int br,int M,int R[][2],int L[],int K,int P[]){
    n = br;
    m = M;
    k = K;
    for(int i = 0; i < m; i++){
        g[R[i][0]+1].push_back({R[i][1]+1,L[i]});
        g[R[i][1]+1].push_back({R[i][0]+1,L[i]});
    }
    for(int i = 0; i < k; i++){
        ex[P[i]+1] = 1;
    }

    return zadrvo();
}

/*int grane[10*N][2],tezine[10*N],izlazi[N];
int main(){
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    int br1,br2,br3;
    cin >> br1 >> br2 >> br3;

    for(int i = 0; i < br2; i++){
        cin >> grane[i][0] >> grane[i][1] >> tezine[i];
    }
    for(int i = 0; i < br3; i++) cin >> izlazi[i];

    cout << travel_plan(br1,br2,grane,tezine,br3,izlazi) << endl;
}*/

• Subtask 1: 46 / 46
• Subtask 2: 0 / 43
• Subtask 3: 0 / 11