Submission #486552

#	Time	Username	Problem	Language	Result	Execution time	Memory
486552		julian33	Untitled (POI11_imp)	C++14	0 / 100	373 ms	332 KiB

Main

#include <bits/stdc++.h>

using namespace std;

#ifdef LOCAL
#define deb(...) logger(#__VA_ARGS__, __VA_ARGS__)
template<typename ...Args>
void logger(string vars, Args&&... values) {
    cerr<<vars<<" = ";
    string delim="";
    (...,(cerr<<delim<<values,delim=", "));
    cerr<<"\n";
}
#else
#define deb(...) logger(#__VA_ARGS__, __VA_ARGS__)
template<typename ...Args>
void logger(string vars, Args&&... values) {}
#endif

#define pb push_back
#define sz(x) (int)(x.size())
typedef long long ll;
typedef pair<int,int> pii;
typedef pair<ll,ll> pll;
template<typename T> inline void maxa(T& a,T b){a=max(a,b);}
template<typename T> inline void mina(T& a,T b){a=min(a,b);} 
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());

const int mxN=3e3+5; //make sure this is right
const int mod=1e9+7;

struct DSU{
    int uf[mxN];
    void init(){memset(uf,-1,sizeof(uf));}
    int find(int x){return uf[x]<0?x:uf[x]=find(uf[x]);}
    bool same(int x,int y){return find(x)==find(y);}
    void unite(int x,int y){
        x=find(x); y=find(y);
        if(x==y)
            return;
        if(uf[x]>uf[y])
            swap(x,y);
        uf[x]+=uf[y]; uf[y]=x;
    }   
} dsu;

int main(){
    cin.sync_with_stdio(0);
    cin.tie(0); cout.tie(0);

    #ifdef LOCAL
        freopen("input.txt","r",stdin);
        freopen("output.txt","w",stdout);
    #endif

    int n,m; cin>>n>>m;
    dsu.init();
    for(int i=0;i<m;i++){
        int a,b; cin>>a>>b;
        dsu.unite(a,b);
    }
    int cnt=0;
    for(int i=1;cnt<n/3;i++){
        if(dsu.find(i)!=i) continue;
        if(abs(dsu.uf[i])>=n/3){
            for(int j=1;cnt<n/3;j++){
                if(dsu.find(j)==i){
                    cout<<j<<" ";
                    cnt++;
                }
            }
        }
    }
}

• Subtask 1: 0 / 9
• Subtask 2: 0 / 9
• Subtask 3: 0 / 9
• Subtask 4: 0 / 9
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• Subtask 10: 0 / 9
• Subtask 11: 0 / 10