oj.uz

Submission #785897

# Submission time Handle Problem Language Result Execution time Memory
785897 2023-07-17T18:11:09 Z kshitij_sodani Abduction 2 (JOI17_abduction2) C++14
44 / 100
 3761 ms 9788 KB 
#include <bits/stdc++.h>
using namespace std;
#define a first
#define b second
#define pb push_back
typedef long long llo;
#define endl '\n'
 void setIO(string name) {
	ios_base::sync_with_stdio(0); cin.tie(0);
	freopen((name+".txt").c_str(),"r",stdin);
//	freopen((name+".out").c_str(),"w",stdout);
}
llo aa[500001];
llo bb[500001];
llo n,m,q;
vector<pair<pair<llo,llo>,llo>> ss;
set<pair<llo,llo>> xx[2];
llo dp[500001][2];
llo solve(llo i,llo j){
//	cout<<i<<",,"<<j<<endl;
	llo ind=-1;
	llo ind2=-1;
	for(llo ii=0;ii<ss.size();ii++){
		if(ss[ii].a.b==i and ss[ii].b==0){
			ind=ii;
		}
		if(ss[ii].a.b==j and ss[ii].b==1){
			ind2=ii;
		}
	}
	xx[0].clear();
	xx[1].clear();
	pair<pair<llo,llo>,llo> cur={{i,i},0};

	pair<pair<llo,llo>,llo> cur2={{j,j},1};
	for(llo jj=max(ind,ind2)+1;jj<ss.size();jj++){
		if(ss[jj].b==0){
			xx[0].insert({ss[jj].a.b,jj});
		}
		else{
			xx[1].insert({ss[jj].a.b,jj});
		}
	}
	//cout<<ind<<":::"<<ind2<<endl;
	
	llo ok=0;
	if(ind>ind2){
		ok=1;
		swap(cur,cur2);
		swap(ind,ind2);
	}
	llo l=ind2;
	vector<pair<llo,llo>> ans;
	vector<pair<llo,llo>> ans2;
	ans.pb({cur.a.a,cur.a.b});
	ans2.pb({ind,ind});
	ans.pb({cur2.a.a,cur2.a.b});
	ans2.pb({ind2,ind2});
	//cout<<cur.b<<"::"<<cur2.b<<endl;
	/*llo ka=0;
	if(i==1820 and j==1935){
	    ka=1;
	}*/
	while(true){
	   // assert(cur.b-cur2.b==1);
	  //  cout<<cur.b<<",,"<<cur2.b<<","<<(ans.size()%2)<<endl;
		pair<llo,llo> le={-1,-1};//pos in original,pos in ss
		pair<llo,llo> re={-1,-1};
    
		auto j=xx[cur.b].lower_bound({max(cur.a.b,cur.a.a)+1,-1});
		if(j!=xx[cur.b].end()){
			re=(*j);
		}
		auto jj=xx[cur.b].lower_bound({min(cur.a.a,cur.a.b),-1});
		if(jj!=xx[cur.b].begin()){
			jj--;
			le=(*jj);
		}
	  /*  if(cur.a.a==1936){
	        cout<<le.a<<"<"<<le.b<<endl;
	    }*/	
		if(le.a==-1 and re.a==-1){
			break;
		}
		if(le.a==-1){
			swap(le,re);
		}
		else{
			if(le.b>re.b){
				swap(le,re);
			}
		}
		
		if(le.b>=0 and le.b<max(ans2.back().a,ans2.back().b)){
			pair<llo,llo> za=ans.back();
			pair<llo,llo> za2=ans2.back();
/*			cout<<za2.a<<","<<za2.b<<endl;
			cout<<le.b<<endl;
			cout<<ans2.size()<<"?"<<endl;*/
			ans.pop_back();;
			ans2.pop_back();
			if(le.b<za2.a){
				assert(le.b>za2.b);
				ans.pb({za.b,za.b});
				ans2.pb({za2.b,za2.b});
				ans.pb({le.a,le.a});
				ans2.pb({le.b,le.b});
				
			//		ans.pb({za.a,za.a});
			//	ans2.pb({za2.a,za2.a});
			}
			else{
				assert(le.b>za2.a);

				ans.pb({za.a,za.a});
				ans2.pb({za2.a,za2.a});
				ans.pb({le.a,le.a});
				ans2.pb({le.b,le.b});	
				
			//	ans.pb({za.b,za.b});
			//	ans2.pb({za2.b,za2.b});
			}
			//assert(n<=20);
		/*	cout<<11<<endl;
			for(int i=0;i<5;i++){
			    if(ans.size()>=i+1){
			        cout<<ans2[ans2.size()-i-1].a<<"::"<<ans2[ans2.size()-i-1].b<<endl;
			        
			    }
			}*/
			for(llo jj=l+1;jj<=ans2.back().a;jj++){
				xx[ss[jj].b].erase({ss[jj].a.b,jj});	
			}
			l=ans2.back().a;
			int zaa=cur.b;
			cur={ans[ans.size()-2],1-zaa};
			cur2={ans.back(),zaa};
			continue;
		}
		else{
			int za=0;
			for(llo jj=l+1;jj<=max(ans2.back().b,ans2.back().a);jj++){
				xx[ss[jj].b].erase({ss[jj].a.b,jj});	
				za=1;
			}
			l=max(ans2.back().b,ans2.back().a);
			if(za==1){
				continue;
			}
		}
		assert(le.b>l or le.b==-1);
		assert(re.b>l or re.b==-1);

		

		if(le.a==-1){
			ans.pb({re.a,re.a});
			pair<pair<llo,llo>,llo> cur3={{re.a,re.a},cur.b};
			ans2.pb({re.b,re.b});
			cur=cur2;
			for(llo jj=l+1;jj<=re.b;jj++){
				xx[ss[jj].b].erase({ss[jj].a.b,jj});
			}
			l=re.b;
			cur2=cur3;
		//	cout<<11<<endl;
			continue;;
		}
		if(re.a==-1){
			ans.pb({le.a,le.a});
			ans2.pb({le.b,le.b});
			pair<pair<llo,llo>,llo> cur3={{le.a,le.a},cur.b};
			for(llo jj=l+1;jj<=le.b;jj++){
				xx[ss[jj].b].erase({ss[jj].a.b,jj});
			}
			l=le.b;

			cur=cur2;
			cur2=cur3;

			continue;
		}
		if(le.b>re.b){
			swap(le,re);
		}
		for(llo jj=l+1;jj<=le.b;jj++){
			xx[ss[jj].b].erase({ss[jj].a.b,jj});
		}
		l=le.b;
		pair<llo,llo> cc={-1,-1};
		pair<llo,llo> dd={-1,-1};
		auto pp=xx[cur2.b].lower_bound({max(cur2.a.b,cur2.a.a)+1,-1});
		if(pp!=xx[cur2.b].end()){
			cc=*pp;
		}
		pp=xx[cur2.b].lower_bound({min(cur2.a.a,cur2.a.b),-1});
		if(pp!=xx[cur2.b].begin()){
			pp--;
			dd=(*pp);
		} 
		if((cc.b>le.b and cc.b<re.b) or (dd.b>le.b and dd.b<re.b)){
			ans.pb({le.a,le.a});
			ans2.pb({le.b,le.b});
			vector<pair<llo,llo>> tt;
			if(cc.b>le.b and cc.b<re.b){
				tt.pb({cc.a,cc.b});
			}
			if(dd.b>le.b and dd.b<re.b){
				tt.pb({dd.a,dd.b});
			}
			sort(tt.begin(),tt.end());
			ans.pb({tt[0].a,tt.back().a});
			ans2.pb({tt[0].b,tt.back().b});
			//pair<pair<llo,llo>,llo> cur3={ans.back(),cur.b};
			cur={{le.a,le.a},cur.b};
			cur2={ans.back(),cur2.b};

			for(llo j=l+1;j<=min(tt[0].b,tt.back().b);j++){
				xx[ss[j].b].erase({ss[j].a.b,j});
			}
			l=min(tt[0].b,tt.back().b);
		}
		else{
			ans.pb({min(le.a,re.a),max(le.a,re.a)});
			if(le.a<re.a){
				ans2.pb({le.b,re.b});
			}
			else{
				ans2.pb({re.b,le.b});
			}
			pair<pair<llo,llo>,llo> cur3={{min(le.a,re.a),max(le.a,re.a)},cur.b};
			cur=cur2;
			cur2=cur3;
			/*for(llo jj=le.b+1;jj<=max(re.b,le.b);jj++){
				xx[ss[jj].b].erase({ss[jj].a.b,jj});
			}
			l=max(re.b,le.b);*/
			continue;
		}
	}
	dp[0][0]=0;
	dp[0][1]=0;
	dp[1][0]=0;
	dp[1][1]=0;
	llo zz=ok;
	zz=zz^(((llo)ans.size()-2)%2);
	if(zz==0){
		ans.pb({0,n-1});
	}
	else{
		ans.pb({0,m-1});
	}
	
	for(llo i=2;i<ans.size();i++){
		dp[i][0]=max(dp[i-2][0]+abs(ans[i-2].a-ans[i].a),dp[i-2][1]+abs(ans[i-2].b-ans[i].a));
		dp[i][1]=max(dp[i-2][0]+abs(ans[i-2].a-ans[i].b),dp[i-2][1]+abs(ans[i-2].b-ans[i].b));
	}
/*	for(int i=0;i+1<ans2.size();i++){
	    assert(max(ans2[i].a,ans2[i].b)<min(ans2[i+1].a,ans2[i+1].b));
	}*/
//	cout<<ans.size()<<endl;
	llo su=max(dp[ans.size()-1][0],dp[ans.size()-1][1]);
	su+=max(dp[ans.size()-2][0],dp[ans.size()-2][1]);
/*	if(ka==1){
	    for(int j=0;j<ans2.size();j++){
	        cout<<ans2[j].a<<":"<<ans2[j].b<<"::"<<ans[j].a<<":"<<ans[j].b<<endl;
	    }*/
/*	    for(auto j:ans2){
	        cout<<j.a<<":"<<j.b<<endl;
	    }*/
/*	    cout<<su<<endl;
	    cout<<endl;
	    
	}*/
	/*for(auto j:ans){
		cout<<j.a<<":"<<j.b<<endl;
	}*/
	return su;
}
int main(){
	ios_base::sync_with_stdio(false);
	cin.tie(NULL);
	//setIO("05-04");

	cin>>n>>m>>q;

	for(llo i=0;i<n;i++){
		cin>>aa[i];
		ss.pb({{aa[i],i},0});
	}

	for(llo i=0;i<m;i++){
		cin>>bb[i];
		ss.pb({{bb[i],i},1});
	}
	sort(ss.begin(),ss.end());

	while(q--){
		llo l,r;
		cin>>l>>r;
		l--;
		r--;
		llo ans=0;
		for(llo x=l-1;x>=0;x--){
			if(aa[x]>bb[r]){
				ans=max(ans,solve(x,r)+(l-x));
				break;
			}
			ans=max(ans,abs(x-l));
		}
		for(llo x=l+1;x<n;x++){
			if(aa[x]>bb[r]){
				ans=max(ans,solve(x,r)+abs(l-x));
				break;
			}
			ans=max(ans,abs(x-l));

		}
		for(llo x=r-1;x>=0;x--){
			if(bb[x]>aa[l]){
				ans=max(ans,solve(l,x)+abs(x-r));
				break;
			}
			ans=max(ans,abs(x-r));
		}
		for(llo x=r+1;x<m;x++){
			if(bb[x]>aa[l]){
				ans=max(ans,solve(l,x)+abs(x-r));
				break;
			}
			ans=max(ans,abs(x-r));
		}
		/*if(ans==3306){
			cout<<2423<<endl;
			continue;
		}*/
		cout<<ans<<endl;

	}
//	cout<<ss[3881].a.b<<"?"<<ss[3881].b<<endl;
  //  cout<<ss[3966].a.b<<"?"<<ss[3966].b<<endl;
  ////  cout<<ss[3999].a.b<<"?"<<ss[3999].b<<endl;

//	cout<<solve(1,2)<<endl;





 
 
 
	return 0;
}

Compilation message

abduction2.cpp: In function 'llo solve(llo, llo)':
abduction2.cpp:23:17: warning: comparison of integer expressions of different signedness: 'llo' {aka 'long long int'} and 'std::vector<std::pair<std::pair<long long int, long long int>, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   23 |  for(llo ii=0;ii<ss.size();ii++){
      |               ~~^~~~~~~~~~
abduction2.cpp:36:31: warning: comparison of integer expressions of different signedness: 'llo' {aka 'long long int'} and 'std::vector<std::pair<std::pair<long long int, long long int>, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   36 |  for(llo jj=max(ind,ind2)+1;jj<ss.size();jj++){
      |                             ~~^~~~~~~~~~
abduction2.cpp:254:15: warning: comparison of integer expressions of different signedness: 'llo' {aka 'long long int'} and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  254 |  for(llo i=2;i<ans.size();i++){
      |              ~^~~~~~~~~~~
abduction2.cpp: In function 'void setIO(std::string)':
abduction2.cpp:10:9: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   10 |  freopen((name+".txt").c_str(),"r",stdin);
      |  ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 336 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 0 ms 344 KB Output is correct
10 Correct 1 ms 344 KB Output is correct
11 Correct 0 ms 248 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 336 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 0 ms 344 KB Output is correct
10 Correct 1 ms 344 KB Output is correct
11 Correct 0 ms 248 KB Output is correct
12 Correct 2 ms 596 KB Output is correct
13 Correct 2 ms 684 KB Output is correct
14 Correct 2 ms 596 KB Output is correct
15 Correct 2 ms 596 KB Output is correct
16 Correct 1 ms 596 KB Output is correct
17 Correct 1 ms 596 KB Output is correct
18 Correct 1 ms 596 KB Output is correct
19 Correct 2 ms 596 KB Output is correct
20 Correct 3 ms 596 KB Output is correct
21 Correct 2 ms 608 KB Output is correct
22 Correct 3 ms 852 KB Output is correct

Subtask #3
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 336 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 0 ms 344 KB Output is correct
10 Correct 1 ms 344 KB Output is correct
11 Correct 0 ms 248 KB Output is correct
12 Correct 2 ms 596 KB Output is correct
13 Correct 2 ms 684 KB Output is correct
14 Correct 2 ms 596 KB Output is correct
15 Correct 2 ms 596 KB Output is correct
16 Correct 1 ms 596 KB Output is correct
17 Correct 1 ms 596 KB Output is correct
18 Correct 1 ms 596 KB Output is correct
19 Correct 2 ms 596 KB Output is correct
20 Correct 3 ms 596 KB Output is correct
21 Correct 2 ms 608 KB Output is correct
22 Correct 3 ms 852 KB Output is correct
23 Correct 71 ms 7584 KB Output is correct
24 Correct 26 ms 4764 KB Output is correct
25 Correct 34 ms 6072 KB Output is correct
26 Correct 33 ms 4796 KB Output is correct
27 Correct 102 ms 9184 KB Output is correct
28 Correct 52 ms 8380 KB Output is correct
29 Correct 23 ms 4428 KB Output is correct
30 Correct 60 ms 7456 KB Output is correct
31 Correct 67 ms 8416 KB Output is correct
32 Correct 17 ms 4424 KB Output is correct
33 Correct 31 ms 5216 KB Output is correct

Subtask #4
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 83 ms 724 KB Output is correct
2 Correct 94 ms 740 KB Output is correct
3 Correct 76 ms 740 KB Output is correct
4 Correct 89 ms 740 KB Output is correct
5 Correct 78 ms 852 KB Output is correct
6 Correct 65 ms 820 KB Output is correct
7 Correct 58 ms 744 KB Output is correct
8 Correct 89 ms 716 KB Output is correct
9 Correct 96 ms 732 KB Output is correct
10 Correct 110 ms 760 KB Output is correct
11 Correct 109 ms 968 KB Output is correct

Subtask #5
0 / 56.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 336 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 0 ms 344 KB Output is correct
10 Correct 1 ms 344 KB Output is correct
11 Correct 0 ms 248 KB Output is correct
12 Correct 2 ms 596 KB Output is correct
13 Correct 2 ms 684 KB Output is correct
14 Correct 2 ms 596 KB Output is correct
15 Correct 2 ms 596 KB Output is correct
16 Correct 1 ms 596 KB Output is correct
17 Correct 1 ms 596 KB Output is correct
18 Correct 1 ms 596 KB Output is correct
19 Correct 2 ms 596 KB Output is correct
20 Correct 3 ms 596 KB Output is correct
21 Correct 2 ms 608 KB Output is correct
22 Correct 3 ms 852 KB Output is correct
23 Correct 71 ms 7584 KB Output is correct
24 Correct 26 ms 4764 KB Output is correct
25 Correct 34 ms 6072 KB Output is correct
26 Correct 33 ms 4796 KB Output is correct
27 Correct 102 ms 9184 KB Output is correct
28 Correct 52 ms 8380 KB Output is correct
29 Correct 23 ms 4428 KB Output is correct
30 Correct 60 ms 7456 KB Output is correct
31 Correct 67 ms 8416 KB Output is correct
32 Correct 17 ms 4424 KB Output is correct
33 Correct 31 ms 5216 KB Output is correct
34 Correct 83 ms 724 KB Output is correct
35 Correct 94 ms 740 KB Output is correct
36 Correct 76 ms 740 KB Output is correct
37 Correct 89 ms 740 KB Output is correct
38 Correct 78 ms 852 KB Output is correct
39 Correct 65 ms 820 KB Output is correct
40 Correct 58 ms 744 KB Output is correct
41 Correct 89 ms 716 KB Output is correct
42 Correct 96 ms 732 KB Output is correct
43 Correct 110 ms 760 KB Output is correct
44 Correct 109 ms 968 KB Output is correct
45 Correct 3704 ms 9760 KB Output is correct
46 Correct 3128 ms 9680 KB Output is correct
47 Correct 3761 ms 9788 KB Output is correct
48 Incorrect 3425 ms 9688 KB Output isn't correct
49 Halted 0 ms 0 KB -