Submission #915204

#	Time	Username	Problem	Language	Result	Execution time	Memory
915204		Abito	Viruses (BOI20_viruses)	C++17	0 / 100	1 ms	604 KiB

Viruses

#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#define F first
#define S second
#define pb push_back
#define ppb pop_back
#define ep insert
#define endl '\n'
#define elif else if
#define pow pwr
#define sqrt sqrtt
#define int long long
#define ll long long
#define y1 YONE
#define free freeee
#define lcm llcm
/*
⠄⠄⠄⠄⢠⣿⣿⣿⣿⣿⢻⣿⣿⣿⣿⣿⣿⣿⣿⣯⢻⣿⣿⣿⣿⣆⠄⠄⠄
⠄⠄⣼⢀⣿⣿⣿⣿⣏⡏⠄⠹⣿⣿⣿⣿⣿⣿⣿⣿⣧⢻⣿⣿⣿⣿⡆⠄⠄
⠄⠄⡟⣼⣿⣿⣿⣿⣿⠄⠄⠄⠈⠻⣿⣿⣿⣿⣿⣿⣿⣇⢻⣿⣿⣿⣿⠄⠄
⠄⢰⠃⣿⣿⠿⣿⣿⣿⠄⠄⠄⠄⠄⠄⠙⠿⣿⣿⣿⣿⣿⠄⢿⣿⣿⣿⡄⠄
⠄⢸⢠⣿⣿⣧⡙⣿⣿⡆⠄⠄⠄⠄⠄⠄⠄⠈⠛⢿⣿⣿⡇⠸⣿⡿⣸⡇⠄
⠄⠈⡆⣿⣿⣿⣿⣦⡙⠳⠄⠄⠄⠄⠄⠄⢀⣠⣤⣀⣈⠙⠃⠄⠿⢇⣿⡇⠄
⠄⠄⡇⢿⣿⣿⣿⣿⡇⠄⠄⠄⠄⠄⣠⣶⣿⣿⣿⣿⣿⣿⣷⣆⡀⣼⣿⡇⠄
⠄⠄⢹⡘⣿⣿⣿⢿⣷⡀⠄⢀⣴⣾⣟⠉⠉⠉⠉⣽⣿⣿⣿⣿⠇⢹⣿⠃⠄
⠄⠄⠄⢷⡘⢿⣿⣎⢻⣷⠰⣿⣿⣿⣿⣦⣀⣀⣴⣿⣿⣿⠟⢫⡾⢸⡟⠄.
⠄⠄⠄⠄⠻⣦⡙⠿⣧⠙⢷⠙⠻⠿⢿⡿⠿⠿⠛⠋⠉⠄⠂⠘⠁⠞⠄⠄⠄
⠄⠄⠄⠄⠄⠈⠙⠑⣠⣤⣴⡖⠄⠿⣋⣉⣉⡁⠄⢾⣦⠄⠄⠄⠄⠄⠄⠄⠄
*/
typedef unsigned long long ull;
using namespace std;
const int N=1e3+5;
int g,n,m,dp[N];
vector<int> adj[N];
vector<vector<int>> mut[N];
bool comp[N][N],vis[N][N],calc[N];
void dfs(int x,int s){
    vis[s][x]=true;
    for (auto u:adj[x]){
        if (vis[s][u]) continue;
        dfs(u,s);
    }return;
}
int rec(int x){
    if (calc[x]) return dp[x];
    calc[x]=true;
    dp[x]=-1;int ans=-1;
    for (auto u:mut[x]){
        int z=0;
        for (auto v:u){
            if (v<2) {
                z++;
                continue;
            }int h=rec(v);
            if (h==-1) {z=-1;break;}
            else z+=h;
        }
        if (ans==-1) ans=z;
        elif (z>-1) ans=min(ans,z);
    }return dp[x]=ans;
}
int32_t main(){
    ios_base::sync_with_stdio(false);cin.tie(NULL);cout.tie(NULL);
    cin>>g>>n>>m;
    for (int i=1;i<=n;i++){
        int x,k;cin>>x>>k;
        vector<int> v(k);
        for (int j=0;j<k;j++){
            cin>>v[j];
            if (v[j]>1) adj[x].pb(v[j]);
        }
        mut[x].pb(v);
    }
    for (int i=2;i<g;i++) dfs(i,i);
    for (int i=2;i<g;i++){
        int x=rec(i);
        if (x==-1) cout<<"YES"<<endl;
        else cout<<"NO "<<x<<endl;
    }
    return 0;
}

• Subtask 1: 0 / 11
• Subtask 2: 0 / 14
• Subtask 3: 0 / 25
• Subtask 4: 0 / 32
• Subtask 5: 0 / 18