Submission #915194

#	Time	Username	Problem	Language	Result	Execution time	Memory
915194		Abito	Viruses (BOI20_viruses)	C++17	0 / 100	177 ms	262144 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;
vector<int> adj[N],det[N],dp[N];
vector<vector<int>> mut[N];
bool comp[N][N],vis[N][N],calc[N],able[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;
}
void rec(int x){
    if (calc[x]) return;
    calc[x]=true;able[x]=true;
    vector<int> v;
    for (auto u:mut[x][0]){
        if (u<2) {v.pb(u);continue;}
        if (vis[u][x] && vis[x][u]) {able[x]=0;break;}
        rec(u);
        if (!able[u]){
            able[x]=0;
            break;
        }
        for (auto y:dp[u]) v.pb(y);
    }
    if (able[x]) dp[x]=v;
    return;
}
bool check(int x){
    for (int i=1;i<=m;i++){
        for (int j=0;j+det[i].size()-1<dp[x].size();j++){
            bool eq=true;
            for (int k=j;k<j+det[i].size();k++) eq&=(dp[x][k]==det[i][k-j]);
            if (eq) return 1;
        }
    }return 0;
}
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=1;i<=m;i++){
        int l;cin>>l;
        det[i].resize(l);
        for (int j=0;j<l;j++) cin>>det[i][j];
    }
    for (int i=2;i<g;i++){
        rec(i);
        //for (auto u:dp[i]) cout<<u<<' ';cout<<endl;
        if (!able[i]){
            cout<<"YES"<<endl;
            continue;
        }
        bool y=check(i);
        if (y) cout<<"YES"<<endl;
        else cout<<"NO "<<dp[i].size()<<endl;
    }
    return 0;
}

Compilation message (stderr)

Viruses.cpp: In function 'bool check(long long int)':
Viruses.cpp:65:27: warning: comparison of integer expressions of different signedness: 'long long int' and 'long long unsigned int' [-Wsign-compare]
   65 |             for (int k=j;k<j+det[i].size();k++) eq&=(dp[x][k]==det[i][k-j]);
      |                          ~^~~~~~~~~~~~~~~~

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