Submission #1120994

#	Time	Username	Problem	Language	Result	Execution time	Memory
1120994		Moonn	KOVANICE (COI15_kovanice)	C++17	0 / 100	420 ms	207752 KiB

kovanice

#include <bits/stdc++.h>
#define ll long long
#define endl "\n";
#define AI ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
using namespace std;
vector<queue<ll>>ve(300001);
ll a[300001],ch[300001];
void dfs(ll x)
{
    ch[x]=1;
    while(!ve[x].empty())
    {
        if(a[x]!=-1)
        a[ve[x].front()]=a[x];
        if(ch[ve[x].front()]!=1)
        dfs(ve[x].front());
        if(a[x]==-1)
        a[x]=a[ve[x].front()];
        ve[x].pop();
    }
}
int main()
{
    ll n,m,v,i,j;
    cin>>n>>m>>v;
    for(i=0;i<m;i++)
    a[i]=-1;
    ll x,y;
    char d;
    queue<ll>qq;
    for(i=0;i<v;i++)
    {
        cin>>x>>d>>y;
        x--;
        y--;
        if(d=='<')
        {
            a[x]=1;
            a[y]=2;
        }
        else
        {
            ve[x].push(y);
            ve[y].push(x);
        }
    }
    for(i=0;i<m;i++)
    {
        if(ch[i]==0)
        dfs(i);
    }
    for(i=0;i<m;i++)
    {
        if(a[i]==-1)
        cout<<"?\n";
        else
        cout<<"K"<<a[i]<<endl;
    }
}

Compilation message (stderr)

kovanice.cpp: In function 'int main()':
kovanice.cpp:24:16: warning: unused variable 'j' [-Wunused-variable]
   24 |     ll n,m,v,i,j;
      |                ^

• Subtask 1: 0 / 10
• Subtask 2: 0 / 40
• Subtask 3: 0 / 10
• Subtask 4: 0 / 40