제출 #398621

#제출 시각아이디문제언어결과실행 시간메모리
398621mosiashvililuka다리 (APIO19_bridges)C++14
73 / 100
3084 ms6728 KiB
#include<bits/stdc++.h>
using namespace std;
int T=340;
int a,b,c,d,e,i,j,ii,jj,zx,xc,tes,t,te,fx[100009],pi,msh[100009],sz[100009],cnt,bo[100009],ans[100009];
int qi,qqi;
int A,B,C,D,E,sub4;
stack <pair <int, int> > M,S;
pair <pair <int, int>, int> P[100009];
pair <int, pair <int, int> > Q[100009],p[100009];
pair <int, int> q[100009],qq[100009];
int fnd(int q){
    while(msh[q]!=0) q=msh[q];
    return q;
}
void mrg(int q, int w){
    q=fnd(q);w=fnd(w);
    if(q==w) return;
    if(sz[q]<sz[w]) swap(q,w);
    M.push(make_pair(w,msh[w]));
    S.push(make_pair(q,sz[q]));
    msh[w]=q;
    sz[q]+=sz[w];
}
void rollback(){
    msh[M.top().first]=M.top().second;
    sz[S.top().first]=S.top().second;
    M.pop();S.pop();
}
void ROLL(int q){
    while(M.size()>q){
        msh[M.top().first]=M.top().second;
        sz[S.top().first]=S.top().second;
        M.pop();S.pop();
    }
}
int main(){
    using namespace std::chrono_literals;
    std::this_thread::sleep_for(-999ms);
    ios_base::sync_with_stdio(false),cin.tie(0),cout.tie(0);
    cin>>a>>b;
    for(i=1; i<=b; i++){
        cin>>P[i].first.first>>P[i].first.second>>P[i].second;
        P[i].second=-P[i].second;
    }
    cin>>tes;
    for(t=1; t<=tes; t++){
        cin>>Q[t].first>>Q[t].second.first>>Q[t].second.second;
        Q[t].second.second=-Q[t].second.second;
        if(Q[t].first==1) sub4=1;
    }
    if(sub4==0){
        T=a;
        for(t=1; t<=tes; t++){
        ans[t]=-1;
    }
    for(t=T; ; t+=T){
        te=t-T+1;
        if(t>tes) t=tes;
        if(te>t) break;
        pi=0;
        for(i=te; i<=t; i++){
            if(Q[i].first==1){
                fx[Q[i].second.first]=t;
            }
        }
        for(i=1; i<=a; i++){
            msh[i]=0;sz[i]=1;
        }
        while(M.size()) M.pop();
        while(S.size()) S.pop();
        for(i=1; i<=b; i++){
            if(fx[i]==t) continue;
            pi++;
            p[pi].first=P[i].second;
            p[pi].second=P[i].first;
        }
        sort(p+1,p+pi+1);
        qi=0;qqi=0;
        for(i=te; i<=t; i++){
            if(Q[i].first==1){
                
            }else{
                qqi++;
                qq[qqi].first=Q[i].second.second;
                qq[qqi].second=i;
            }
        }
        sort(qq+1,qq+qqi+1);
        A=1;B=1;
        for(i=1; i<=qqi; i++){
            while(A<=pi&&p[A].first<=qq[i].first){
                mrg(p[A].second.first,p[A].second.second);
                A++;
            }
            E=M.size();
            c=Q[qq[i].second].second.first;d=qq[i].second;
            ans[d]=sz[fnd(c)];
        }
        for(i=te; i<=t; i++){
            if(Q[i].first==1){
                P[Q[i].second.first].second=Q[i].second.second;
            }
        }
    }
    for(t=1; t<=tes; t++){
        if(ans[t]==-1) continue;
        cout<<ans[t]<<endl;
    }
    
    return 0;
    }
    for(t=1; t<=tes; t++){
        ans[t]=-1;
    }
    for(t=T; ; t+=T){
        te=t-T+1;
        if(t>tes) t=tes;
        if(te>t) break;
        pi=0;
        for(i=te; i<=t; i++){
            if(Q[i].first==1){
                fx[Q[i].second.first]=t;
            }
        }
        for(i=1; i<=a; i++){
            msh[i]=0;sz[i]=1;
        }
        while(M.size()) M.pop();
        while(S.size()) S.pop();
        for(i=1; i<=b; i++){
            if(fx[i]==t) continue;
            pi++;
            p[pi].first=P[i].second;
            p[pi].second=P[i].first;
        }
        sort(p+1,p+pi+1);
        qi=0;qqi=0;
        for(i=te; i<=t; i++){
            if(Q[i].first==1){
                
            }else{
                qqi++;
                qq[qqi].first=Q[i].second.second;
                qq[qqi].second=i;
            }
        }
        sort(qq+1,qq+qqi+1);
        A=1;B=1;
        for(i=1; i<=qqi; i++){
            while(A<=pi&&p[A].first<=qq[i].first){
                mrg(p[A].second.first,p[A].second.second);
                A++;
            }
            E=M.size();
            cnt++;
            for(j=qq[i].second; j>=te; j--){
                if(Q[j].first==2) continue;
                if(bo[Q[j].second.first]==cnt){
                    
                }else{
                    bo[Q[j].second.first]=cnt;
                    if(Q[j].second.second<=qq[i].first){
                        mrg(P[Q[j].second.first].first.first,P[Q[j].second.first].first.second);
                    }
                }
            }
            for(j=qq[i].second+1; j<=t; j++){
                if(Q[j].first==1&&bo[Q[j].second.first]!=cnt){
                    if(P[Q[j].second.first].second<=qq[i].first){
                        mrg(P[Q[j].second.first].first.first,P[Q[j].second.first].first.second);
                    }
                    bo[Q[j].second.first]=cnt;
                }
            }
            c=Q[qq[i].second].second.first;d=qq[i].second;
            ans[d]=sz[fnd(c)];
            ROLL(E);
        }
        for(i=te; i<=t; i++){
            if(Q[i].first==1){
                P[Q[i].second.first].second=Q[i].second.second;
            }
        }
    }
    for(t=1; t<=tes; t++){
        if(ans[t]==-1) continue;
        cout<<ans[t]<<endl;
    }
    return 0;
}

컴파일 시 표준 에러 (stderr) 메시지

bridges.cpp: In function 'void ROLL(int)':
bridges.cpp:30:19: warning: comparison of integer expressions of different signedness: 'std::stack<std::pair<int, int> >::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   30 |     while(M.size()>q){
      |           ~~~~~~~~^~
#Verdict Execution timeMemoryGrader output
Fetching results...
#Verdict Execution timeMemoryGrader output
Fetching results...
#Verdict Execution timeMemoryGrader output
Fetching results...
#Verdict Execution timeMemoryGrader output
Fetching results...
#Verdict Execution timeMemoryGrader output
Fetching results...
#Verdict Execution timeMemoryGrader output
Fetching results...