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답안 #905254

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
905254 2024-01-12T21:30:42 Z alexander707070 푸드 코트 (JOI21_foodcourt) C++14
13 / 100
 1000 ms 146796 KB 
#include<bits/stdc++.h>
#define MAXN 500007
using namespace std;

struct event{
    int c,tim;
    long long k;
};

const long long inf=1e17;

int n,m,q,type,l,r;
long long s,t;

long long minsz[4*MAXN],lazy[4*MAXN],maxsz[4*MAXN];
int c[MAXN];

vector< event > tree[4*MAXN];
vector<long long> pref[4*MAXN];

void update(int v,int l,int r,int ll,int rr,event news){
    if(ll>rr)return;
    if(l==ll and r==rr){
        tree[v].push_back(news);

        if(pref[v].empty())pref[v].push_back(news.k);
        else pref[v].push_back(pref[v].back()+news.k);

        return;
    }else{
        int tt=(l+r)/2;
        update(2*v,l,tt,ll,min(tt,rr),news);
        update(2*v+1,tt+1,r,max(tt+1,ll),rr,news);
    }
}

void psh(int v){
    minsz[2*v]+=lazy[v];
    maxsz[2*v]+=lazy[v];

    minsz[2*v]=max(minsz[2*v],0LL);
    maxsz[2*v]=max(maxsz[2*v],0LL);

    minsz[2*v+1]+=lazy[v];
    maxsz[2*v+1]+=lazy[v];

    minsz[2*v+1]=max(minsz[2*v+1],0LL);
    maxsz[2*v+1]=max(maxsz[2*v+1],0LL);

    lazy[2*v]+=lazy[v];
    lazy[2*v+1]+=lazy[v];

    lazy[v]=0;
}

void add(int v,int l,int r,int ll,int rr,long long val){
    if(ll>rr)return;
    if(l==ll and r==rr){
        minsz[v]+=val;
        maxsz[v]+=val;

        lazy[v]+=val;
    }else{
        psh(v);
        int tt=(l+r)/2;
        add(2*v,l,tt,ll,min(tt,rr),val);
        add(2*v+1,tt+1,r,max(tt+1,ll),rr,val);

        minsz[v]=min(minsz[2*v],minsz[2*v+1]);
        maxsz[v]=max(maxsz[2*v],maxsz[2*v+1]);
    }
}

void rem(int v,int l,int r,int ll,int rr,long long val){
    if(ll>rr)return;

    if(l==ll and r==rr and minsz[v]>=val){
        minsz[v]-=val;
        lazy[v]-=inf;
        return;
    }

    if(l==ll and r==rr and maxsz[v]<val){
        minsz[v]=maxsz[v]=0;
        lazy[v]=-inf;
        return;
    }

    if(l==r){
        minsz[v]=max(minsz[v]-val,0LL);
        maxsz[v]=max(maxsz[v]-val,0LL);     
    }else{
         psh(v);
        int tt=(l+r)/2;
        rem(2*v,l,tt,ll,min(tt,rr),val);
        rem(2*v+1,tt+1,r,max(tt+1,ll),rr,val);

        minsz[v]=min(minsz[2*v],minsz[2*v+1]);
        maxsz[v]=max(maxsz[2*v],maxsz[2*v+1]);
    }
}

long long getsz(int v,int l,int r,int pos){
    if(l==r)return minsz[v];

    psh(v);
    int tt=(l+r)/2;

    if(pos<=tt)return getsz(2*v,l,tt,pos);
    else return getsz(2*v+1,tt+1,r,pos);
}

long long calc(int v,int qr){
    if(tree[v].empty())return 0;

    int l=-1,r=tree[v].size(),tt;

    while(l+1<r){
        tt=(l+r)/2;
        if(tree[v][tt].tim>=qr){
            r=tt;
        }else{
            l=tt;
        }
    }

    if(r>0)return pref[v].back()-pref[v][r-1];
    return pref[v].back();
}

long long howmany(int v,int l,int r,int pos,int qr){
    if(l==r){
        return calc(v,qr);
    }else{
        int tt=(l+r)/2;
        if(pos<=tt)return howmany(2*v,l,tt,pos,qr) + calc(v,qr);
        else return howmany(2*v+1,tt+1,r,pos,qr) + calc(v,qr);
    }
}

int bin(int s,long long t){
    int l=0,r=q+1,tt;
    while(l+1<r){
        tt=(l+r)/2;
        if(howmany(1,1,n,s,tt)>=t){
            l=tt;
        }else{
            r=tt;
        }
    }

    return c[l];
}

int main(){

    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    
    cin>>n>>m>>q;
    
    for(int i=1;i<=q;i++){
        cin>>type;
        if(type==1){
            cin>>l>>r>>s>>t;
            c[i]=s;

            add(1,1,n,l,r,t);
            for(int i=l;i<=r;i++){
               // minsz[i]+=t;
            }

            update(1,1,n,l,r,{s,i,t});
        }else if(type==2){
            cin>>l>>r>>s;
            rem(1,1,n,l,r,s);
            for(int i=l;i<=r;i++){
               // minsz[i]=max(minsz[i]-s,0LL);
            }
        }else{
            cin>>s>>t;
            if(getsz(1,1,n,s)<t)cout<<"0\n";
            else cout<<bin(s,getsz(1,1,n,s)-t+1)<<"\n";
        }
    }

    return 0;
}

Compilation message

foodcourt.cpp: In function 'int main()':
foodcourt.cpp:174:31: warning: narrowing conversion of 's' from 'long long int' to 'int' [-Wnarrowing]
  174 |             update(1,1,n,l,r,{s,i,t});
      |                               ^

Subtask #1
0 / 2.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 35 ms 95068 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 35 ms 95068 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 7.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 419 ms 100956 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 21.0

# 결과 실행 시간 메모리 Grader output
1 Execution timed out 1032 ms 146796 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #5
0 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 35 ms 95068 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #6
13.0 / 13.0

# 결과 실행 시간 메모리 Grader output
1 Correct 293 ms 112468 KB Output is correct
2 Correct 351 ms 113424 KB Output is correct
3 Correct 330 ms 114176 KB Output is correct
4 Correct 253 ms 110336 KB Output is correct
5 Correct 319 ms 112800 KB Output is correct
6 Correct 373 ms 114956 KB Output is correct
7 Correct 67 ms 102240 KB Output is correct
8 Correct 81 ms 95936 KB Output is correct
9 Correct 117 ms 103300 KB Output is correct
10 Correct 138 ms 111124 KB Output is correct
11 Correct 198 ms 116368 KB Output is correct
12 Correct 188 ms 116364 KB Output is correct

Subtask #7
0 / 26.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 35 ms 95068 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #8
0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 35 ms 95068 KB Output isn't correct
2 Halted 0 ms 0 KB -