oj.uz

Submission #917541

# Submission time Handle Problem Language Result Execution time Memory
917541 2024-01-28T11:46:46 Z _VIBE Team Contest (JOI22_team) C++17
37 / 100
 2000 ms 12740 KB 
#include "bits/stdc++.h"
using namespace std;

#define endl '\n'
const int inf=INT_MAX;

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();
   
   unordered_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]=inf;
            mx[i]=-inf;
            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?(-inf):(inf));
        
        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;
}

Compilation message

team.cpp: In function 'void Excuse_Me(int)':
team.cpp:37:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<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
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 1 ms 344 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 2 ms 344 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 1 ms 344 KB Output is correct
19 Correct 1 ms 348 KB Output is correct
20 Correct 1 ms 348 KB Output is correct
21 Correct 1 ms 348 KB Output is correct
22 Correct 1 ms 348 KB Output is correct
23 Correct 0 ms 348 KB Output is correct
24 Correct 1 ms 348 KB Output is correct
25 Correct 1 ms 348 KB Output is correct

Subtask #2
29.0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 1 ms 344 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 2 ms 344 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 1 ms 344 KB Output is correct
19 Correct 1 ms 348 KB Output is correct
20 Correct 1 ms 348 KB Output is correct
21 Correct 1 ms 348 KB Output is correct
22 Correct 1 ms 348 KB Output is correct
23 Correct 0 ms 348 KB Output is correct
24 Correct 1 ms 348 KB Output is correct
25 Correct 1 ms 348 KB Output is correct
26 Correct 65 ms 1780 KB Output is correct
27 Correct 48 ms 1372 KB Output is correct
28 Correct 36 ms 1116 KB Output is correct
29 Correct 15 ms 1116 KB Output is correct
30 Correct 12 ms 880 KB Output is correct
31 Correct 49 ms 860 KB Output is correct
32 Correct 9 ms 604 KB Output is correct
33 Correct 8 ms 860 KB Output is correct
34 Correct 14 ms 1880 KB Output is correct
35 Correct 2 ms 348 KB Output is correct
36 Correct 2 ms 344 KB Output is correct
37 Correct 7 ms 604 KB Output is correct
38 Correct 13 ms 604 KB Output is correct
39 Correct 11 ms 656 KB Output is correct

Subtask #3
0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 1 ms 344 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Execution timed out 2055 ms 12740 KB Time limit exceeded
12 Halted 0 ms 0 KB -

Subtask #4
0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 1 ms 344 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Execution timed out 2055 ms 12740 KB Time limit exceeded
12 Halted 0 ms 0 KB -

Subtask #5
0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 1 ms 344 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Execution timed out 2055 ms 12740 KB Time limit exceeded
12 Halted 0 ms 0 KB -

Subtask #6
0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 1 ms 344 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Execution timed out 2055 ms 12740 KB Time limit exceeded
12 Halted 0 ms 0 KB -

Subtask #7
0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 1 ms 344 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 2 ms 344 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 1 ms 344 KB Output is correct
19 Correct 1 ms 348 KB Output is correct
20 Correct 1 ms 348 KB Output is correct
21 Correct 1 ms 348 KB Output is correct
22 Correct 1 ms 348 KB Output is correct
23 Correct 0 ms 348 KB Output is correct
24 Correct 1 ms 348 KB Output is correct
25 Correct 1 ms 348 KB Output is correct
26 Correct 65 ms 1780 KB Output is correct
27 Correct 48 ms 1372 KB Output is correct
28 Correct 36 ms 1116 KB Output is correct
29 Correct 15 ms 1116 KB Output is correct
30 Correct 12 ms 880 KB Output is correct
31 Correct 49 ms 860 KB Output is correct
32 Correct 9 ms 604 KB Output is correct
33 Correct 8 ms 860 KB Output is correct
34 Correct 14 ms 1880 KB Output is correct
35 Correct 2 ms 348 KB Output is correct
36 Correct 2 ms 344 KB Output is correct
37 Correct 7 ms 604 KB Output is correct
38 Correct 13 ms 604 KB Output is correct
39 Correct 11 ms 656 KB Output is correct
40 Correct 1 ms 344 KB Output is correct
41 Correct 1 ms 348 KB Output is correct
42 Correct 1 ms 348 KB Output is correct
43 Correct 1 ms 348 KB Output is correct
44 Correct 0 ms 348 KB Output is correct
45 Correct 1 ms 344 KB Output is correct
46 Correct 0 ms 348 KB Output is correct
47 Correct 1 ms 348 KB Output is correct
48 Correct 0 ms 348 KB Output is correct
49 Correct 0 ms 348 KB Output is correct
50 Execution timed out 2055 ms 12740 KB Time limit exceeded
51 Halted 0 ms 0 KB -