제출 #167690

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
167690		rzbt	Teoretičar (COCI18_teoreticar)	C++14	52 / 130	10522 ms	164384 KiB

teoreticar

#include <bits/stdc++.h>
#define mp make_pair
#define pb push_back
#define F first
#define S second
#define all(x) x.begin(),x.end()
#define MAXN 100005
typedef long long ll;


using namespace std;

int l,r,m;
vector<pair<int,int> > niz[2*MAXN];
pair<int,int> grane[5*MAXN];
int boje[5*MAXN],stepen[2*MAXN];
vector<int> resip,tcvor,levi,desni;
int bboja=0,maxd;
bool aktivan[2*MAXN],obidjen[10*MAXN];
int pocs[2*MAXN];

void ojler(int t,int grana,int znak,int dub){
    //if(t==24)printf(" euler   %d %d   %d\n",t,dub,grana);
    //printf("    %d %d  %d %d\n",t,grana,znak,dub);
    obidjen[grana]=true;
    for(auto x:niz[t])
        if(!obidjen[x.second])
            ojler(x.first,x.second,1-znak,dub);

    boje[grana]|=(znak<<dub);
    if(znak)desni.pb(grana);
    else levi.pb(grana);

}


void resi(int dub,vector<int> v){
    if(dub>=maxd)return;
    levi.clear();
    desni.clear();

    for(auto x:v){
        obidjen[x]=false;
        int a=grane[x].F,b=grane[x].S;
        if(!aktivan[a]){
            aktivan[a]=true;
            niz[a].clear();
            tcvor.pb(a);
        }
        if(!aktivan[b]){
            aktivan[b]=true;
            niz[b].clear();
            tcvor.pb(b);
        }
        niz[a].pb(mp(b,x));
        niz[b].pb(mp(a,x));

    }
    niz[l+r+1].clear();
    niz[0].clear();
    int nfus=0;
    for(auto x:tcvor){
        if(niz[x].size()&1){
            nfus++;
            if(x<=l){
                niz[x].pb(mp(l+r+1,nfus+m));
                niz[l+r+1].pb(mp(x,nfus+m));
            }else{
                niz[x].pb(mp(0,nfus+m));
                niz[0].pb(mp(x,nfus+m));
            }
        }
    }
    if(niz[0].size()&1){
        nfus++;
        niz[0].pb(mp(l+r+1,nfus+m));
        niz[l+r+1].pb(mp(0,nfus+m));
    }
    for(auto x:tcvor){
        //if(x==24)printf(" tst   %d %d   %d\n",x,dub,niz[x].size());

        if(obidjen[niz[x][0].S])continue;
        ojler(x,0,0,dub);
    }
    vector<int> r1,r2;
    for(auto x:levi)
        if(x!=0)r1.pb(x);
    for(auto x:desni)
        if(x!=0)r2.pb(x);
    for(auto x:v)obidjen[x]=false;
    for(int i=m+1;i<=m+nfus;i++)obidjen[i]=false;

    for(auto x:tcvor)aktivan[x]=false;
    tcvor.clear();

    resi(dub+1,r1);
    resi(dub+1,r2);
}


int main()
{
    scanf("%d %d %d", &l, &r, &m);
    for(int i=1;i<=m;i++){


        int t1,t2;
        scanf("%d %d", &t1, &t2);
        t2+=l;
        pocs[t1]++;
        pocs[t2]++;
        //printf("  %d %d\n",t1,t2);
        bboja=max(bboja,max(pocs[t1],pocs[t2]));
        grane[i]=(mp(t1,t2));
        resip.pb(i);
    }
    int bbp=1;
    while((1<<bbp)<bboja)bbp++;
    maxd=bbp;
    bboja=1<<bbp;
    resi(0,resip);
    printf("%d\n",bboja);
    for(int i=1;i<=m;i++)printf("%d\n",boje[i]+1);

    return 0;
}

컴파일 시 표준 에러 (stderr) 메시지

teoreticar.cpp: In function 'int main()':
teoreticar.cpp:103:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d %d %d", &l, &r, &m);
     ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
teoreticar.cpp:108:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d %d", &t1, &t2);
         ~~~~~^~~~~~~~~~~~~~~~~~~

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