제출 #917530

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
917530		_VIBE	Team Contest (JOI22_team)	C++17	37 / 100	2092 ms	16784 KiB

team

#include "bits/stdc++.h"
using namespace std;

#define int long long
#define endl '\n'

void Excuse_Me(int TC)
{
   
   int n;
   cin>>n;
   
   vector<vector<int>> g(n);
   
   vector<int> v;
   
   for(int i=0;i<n;i++){
        int a,b,c;
        cin>>a>>b>>c;
        g[i]={a,b,c};
        v.push_back(b);
        v.push_back(b-1);
        v.push_back(b+1);
   }
   
   sort(g.begin(),g.end());
   
   sort(v.begin(),v.end());
   
   v.resize(unique(v.begin(),v.end())-v.begin());
   
   int m=v.size();
   
   map<int,int> comp;
   
   for(int i=0;i<v.size();i++) comp[v[i]]=i;
   
   int mn[4*m],mx[4*m];
   
   
   function<void(int,int,int)> build=[&](int s,int e,int i)->void{
        if(s==e){
            mn[i]=1e18;
            mx[i]=-1e18;
            return;
        }
        
        int m=(s+e)/2;
        
        build(s,m,i*2);
        build(m+1,e,i*2+1);
        
        mn[i]=min(mn[i*2],mn[i*2+1]);
        mx[i]=max(mx[i*2],mx[i*2+1]);
        
   }; 
   
   build(0,m-1,1);
   
   vector<pair<int,int>> p;
   
   int ans=-1;
   
   function<void(int,int,int,int,int)> update=[&](int s,int e,int i,int pos,int val)->void{
        if(s==e){
            mn[i]=min(mn[i],val);
            mx[i]=max(mx[i],val);
            return;
        }
        
        int m=(s+e)/2;
        if(pos<=m) update(s,m,i*2,pos,val);
        else update(m+1,e,i*2+1,pos,val);   
        mn[i]=min(mn[i*2],mn[i*2+1]);
        mx[i]=max(mx[i*2],mx[i*2+1]);       
        
   };
   
   function<int(int,int,int,int,int,bool)> get=[&](int s,int e,int i,int l,int r,bool ismax)->int{
        if(l>r) return (ismax?(-1e18):(1e18));
        
        if(s==l and r==e) return (ismax?mx[i]:mn[i]);
        
        int m=(s+e)/2;
        
        if(ismax) return max(get(s,m,i*2,l,min(m,r),ismax),get(m+1,e,i*2+1,max(m+1,l),r,ismax));
        return min(get(s,m,i*2,l,min(m,r),ismax),get(m+1,e,i*2+1,max(m+1,l),r,ismax));
        
   };
   
   
   for(int i=0;i<n;){
        
        int j=i;
        
        vector<pair<int,int>> temp;
        
        while(j<n and (g[i][0]==g[j][0])){
            
            for(auto x:p){
                if((x.first>g[j][1]) and (x.second>g[j][2])) ans=max(ans,g[j][0]+x.first+x.second);
            }
            
            
            int b=g[j][1];
            int c=g[j][2];
            
            //taking this b as max
            // then i have to find max c in range 0,comp[b-1]
            //if this c is greater than my current c then i can take that pair
            
            int max_c=get(0,m-1,1,0,comp[b-1],true);
            
            if(max_c>c) temp.push_back({b,max_c});
            
            //now my b will act as min and i have to find greatest index in range comp[b+1],m-1 such that its value is less than my current c
            int low=comp[b+1],high=m-1;
            
            int ind=-1;
            
            while(low<=high){
                
                int mi=(low+high)/2;
                
                // find if min_c from range [mi,m-1] is less than my current_c
                
                int min_c=get(0,m-1,1,mi,m-1,false);
                
                if(min_c<c){
                    ind=mi;
                    low=mi+1;
                }
                else{
                    high=mi-1;
                }
                
            }
            
            if(ind!=-1) temp.push_back({v[ind],c});
            update(0,m-1,1,comp[b],c);
            j++;    
                    
        }
        
        i=j;
        
        for(auto x:temp) p.push_back(x);
        
        
   }
   
   
   cout<<ans;
    

   
   
}
 
signed main()
{
    ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0);
    freopen("error.txt","w",stderr);
    int Tc=1;
    // cin>>Tc;
 
    for(int tc=1;tc<=Tc;tc++)
    {
        Excuse_Me(tc);
    }
   
    return 0;
}

컴파일 시 표준 에러 (stderr) 메시지

team.cpp: In function 'void Excuse_Me(long long int)':
team.cpp:37:17: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   37 |    for(int i=0;i<v.size();i++) comp[v[i]]=i;
      |                ~^~~~~~~~~
team.cpp: In function 'int main()':
team.cpp:164:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  164 |     freopen("error.txt","w",stderr);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 8 / 8
• Subtask 2: 29 / 29
• Subtask 3: 0 / 9
• Subtask 4: 0 / 9
• Subtask 5: 0 / 9
• Subtask 6: 0 / 9
• Subtask 7: 0 / 27