Submission #718514

#	Time	Username	Problem	Language	Result	Execution time	Memory
718514		Augustyn	Naboj (COCI22_naboj)	C++17	110 / 110	183 ms	15160 KiB

naboj

#include<iostream>
#include<vector>
#define gu getchar_unlocked
#define pf printf
using namespace std;
int sw()
{
    int ret=0,wcz=gu();
    while(wcz<'0'||wcz>'9')
        wcz=gu();
    while(wcz>='0'&&wcz<='9')
    {
        ret=ret*10+wcz-'0';
        wcz=gu();
    }
    return ret;
}
int n,m;
vector<int>*pol;
bool *juzodw,*terodw;
int *stp_wch,*odp,it;
bool dfs(int t)
{
    juzodw[t]=1;
    terodw[t]=1;
    for(int i:pol[t])
    {
        if(terodw[i]==1)
            return 1;
        if(juzodw[i]==0)
            if(dfs(i))
                return 1;
    }
    terodw[t]=0;
    odp[++it]=t;
    return 0;
}
int main()
{
    n=sw();m=sw();
    pol=new vector<int>[n+1];
    juzodw=new bool[n+1];
    terodw=new bool[n+1];
    odp=new int[n+1];
    stp_wch=new int[n+1];
    while(m)
    {
        --m;
        int a,b;
        a=sw();b=sw();
        pol[b].push_back(a);
        stp_wch[a]++;
    }
    for(int i=1;i<=n;++i)
        if(stp_wch[i]==0)
            if(dfs(i))
            {
                pf("-1");
                return 0;
            }
    if(it!=n)
    {
        pf("-1");
        return 0;
    }
    pf("%d\n",n);
    for(int i=1;i<=n;++i)
        pf("%d 0\n",odp[i]);
    return 0;
}

• Subtask 1: 15 / 15
• Subtask 2: 25 / 25
• Subtask 3: 70 / 70