oj.uz

Submission #458044

# Submission time Handle Problem Language Result Execution time Memory
458044 2021-08-07T20:43:34 Z MOUF_MAHMALAT KOVANICE (COI15_kovanice) C++11
20 / 100
 328 ms 23440 KB 
#include<bits/stdc++.h>
#define all(s) s.begin(),s.end()
using namespace std;
typedef int ll;
ll n,m,k,a[300009],b[300009];
ll p[300009],sz[300009],d[300009];
vector<vector<ll> >v;
char c[300009];
bool is[300009],st[300009];
ll gp(ll z)
{
    if(p[z]==z)
        return z;
    return p[z]=gp(p[z]);
}
void mrg(ll x,ll y)
{
    x=gp(x),y=gp(y);
    if(x==y)
        return;
    if(sz[x]<sz[y])
        swap(x,y);
    p[y]=x,sz[x]+=sz[y];
}
void dfs(ll id,ll op)
{
    d[id]=op;
    if(d[id]==n)
        return void(is[id]=1);
    for(auto z:v[id])
    {
        if(d[z]<op+1)
            dfs(z,op+1);
        is[id]|=is[z];
    }
}
int main()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    cin>>n>>m>>k;
    v.resize(m+1);
    for(ll i=1; i<=m; i++)
        p[i]=i,sz[i]=1;
    for(ll i=1; i<=k; i++)
    {
        cin>>a[i]>>c[i]>>b[i];
        if(c[i]=='=')
            mrg(a[i],b[i]);
    }
    for(ll i=1; i<=k; i++)
    {
        if(c[i]=='=')
            continue;
        if(c[i]=='<')
            v[gp(a[i])].push_back(gp(b[i])),st[b[i]]=1;
        else
            v[gp(b[i])].push_back(gp(a[i])),st[a[i]]=1;
    }
    for(ll i=1;i<=m;i++)
    if(st[i]==0)
        dfs(i,1);
    for(ll i=1;i<=m;i++)
    {
        if(is[gp(i)])
            cout<<"K"<<d[gp(i)];
        else
            cout<<"?";
        cout<<"\n";
    }
    return 0;
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct

Subtask #2
0 / 40.0

# Verdict Execution time Memory Grader output
1 Incorrect 66 ms 11604 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 25 ms 2564 KB Output is correct
2 Correct 29 ms 2644 KB Output is correct
3 Correct 56 ms 2648 KB Output is correct

Subtask #4
0 / 40.0

# Verdict Execution time Memory Grader output
1 Incorrect 328 ms 23440 KB Output isn't correct
2 Halted 0 ms 0 KB -