oj.uz

Submission #846198

# Submission time Handle Problem Language Result Execution time Memory
846198 2023-09-07T12:22:22 Z vjudge1 KOVANICE (COI15_kovanice) C++17
0 / 100
 399 ms 45436 KB 
#pragma GCC optimize("unroll-loops,Ofast,O3")
#include <bits/stdc++.h>
#define pb push_back
#define mp make_pair
#define spc << " " <<
#define all(x) x.begin(), x.end()
#define ll long long
#define int long long
#define ii pair<int,int>
#define vi vector<int>
#define vii vector<ii>
#define st first
#define nd second
#define inf 1000000009
#define MOD 998244353
using namespace std;



int dad[300005];
string ans[300005];
int dep[300005];
set<int> edges[300005];

int find(int x){
    if(dad[x]==x) return x;
    return dad[x]=find(dad[x]);
}
void unite(int x, int y){
    dad[find(x)]=find(y);
}


void dfs(int node){
    if(dep[find(node)]!=-1) return;
    dep[find(node)]=1;

    for(auto i:edges[find(node)]){
        dfs(find(i));
        dep[find(node)]=max(dep[find(node)], dep[find(i)]+1);
    }
}


void mark(int node){
    if(ans[find(node)]!="?") return;

    ans[find(node)] = "K";
    ans[find(node)] += to_string(dep[find(node)]);

    for(auto i:edges[find(node)]){
        if(dep[find(i)]==dep[find(node)]-1){
            mark(find(i));
        }
    }
}





void solve(){
    int n, m, v; cin >> n >> m >> v;

    for(int i=1; i<=m; i++){
        dad[i]=i;
        ans[i]="?";
        dep[i]=-1;
    }

    vector<string> later;
    for(int i=1; i<=v; i++){
        string s; cin >> s;
        int a=s[0]-'0', b=s[2]-'0';
        if(s[1]=='='){
            unite(a,b);
        }
        else later.pb(s);
    }
    for(auto s:later){
        int a=s[0]-'0', b=s[2]-'0';
        if(s[1]=='<'){
            edges[find(b)].insert(find(a));
        }
        else edges[find(a)].insert(find(b));
    }
    
    for(int i=1; i<=m; i++){    
        dfs(find(i));
    }

    for(int i=1; i<=m; i++){
        if(dep[find(i)]==n) mark(find(i));
    }

    for(int i=1; i<=m; i++){
        cout << ans[find(i)] << endl;
    }
}



signed main(){
    ios_base::sync_with_stdio(false);cin.tie(0);
    #ifdef Local
    freopen("in.txt","r",stdin);
    freopen("out","w",stdout);
    #endif
    

    ll t=1;
    //cin >> t;
    while(t--) solve();
}

Subtask #1
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 7 ms 27228 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
0 / 40.0

# Verdict Execution time Memory Grader output
1 Incorrect 234 ms 32468 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 17 ms 32596 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 40.0

# Verdict Execution time Memory Grader output
1 Incorrect 399 ms 45436 KB Output isn't correct
2 Halted 0 ms 0 KB -