oj.uz

Submission #785916

# Submission time Handle Problem Language Result Execution time Memory
785916 2023-07-17T18:53:51 Z blue Abduction 2 (JOI17_abduction2) C++17
44 / 100
 3727 ms 9404 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};
    	while(l<min(ans2.back().a,ans2.back().b)){
    		llo jj=l+1;
    		xx[ss[jj].b].erase({ss[jj].a.b,jj});
    		l++;
    	}
    	
		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(llo 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;
			llo zaa=cur.b;
			cur={ans[ans.size()-2],1-zaa};
			cur2={ans.back(),zaa};
			continue;
		}
		else{
			llo 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(llo 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(llo 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:259:15: 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]
  259 |  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 0 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 0 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 0 ms 340 KB Output is correct
11 Correct 0 ms 340 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 0 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 0 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 0 ms 340 KB Output is correct
11 Correct 0 ms 340 KB Output is correct
12 Correct 2 ms 596 KB Output is correct
13 Correct 2 ms 468 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 468 KB Output is correct
17 Correct 1 ms 520 KB Output is correct
18 Correct 1 ms 468 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 596 KB Output is correct
22 Correct 3 ms 724 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 0 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 0 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 0 ms 340 KB Output is correct
11 Correct 0 ms 340 KB Output is correct
12 Correct 2 ms 596 KB Output is correct
13 Correct 2 ms 468 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 468 KB Output is correct
17 Correct 1 ms 520 KB Output is correct
18 Correct 1 ms 468 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 596 KB Output is correct
22 Correct 3 ms 724 KB Output is correct
23 Correct 70 ms 7224 KB Output is correct
24 Correct 26 ms 4292 KB Output is correct
25 Correct 34 ms 5680 KB Output is correct
26 Correct 34 ms 4412 KB Output is correct
27 Correct 93 ms 8760 KB Output is correct
28 Correct 52 ms 7968 KB Output is correct
29 Correct 23 ms 4040 KB Output is correct
30 Correct 58 ms 7060 KB Output is correct
31 Correct 70 ms 7992 KB Output is correct
32 Correct 16 ms 3980 KB Output is correct
33 Correct 26 ms 4776 KB Output is correct

Subtask #4
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 88 ms 700 KB Output is correct
2 Correct 93 ms 704 KB Output is correct
3 Correct 74 ms 596 KB Output is correct
4 Correct 89 ms 688 KB Output is correct
5 Correct 77 ms 596 KB Output is correct
6 Correct 65 ms 724 KB Output is correct
7 Correct 64 ms 828 KB Output is correct
8 Correct 89 ms 684 KB Output is correct
9 Correct 97 ms 740 KB Output is correct
10 Correct 111 ms 716 KB Output is correct
11 Correct 108 ms 956 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 0 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 0 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 0 ms 340 KB Output is correct
11 Correct 0 ms 340 KB Output is correct
12 Correct 2 ms 596 KB Output is correct
13 Correct 2 ms 468 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 468 KB Output is correct
17 Correct 1 ms 520 KB Output is correct
18 Correct 1 ms 468 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 596 KB Output is correct
22 Correct 3 ms 724 KB Output is correct
23 Correct 70 ms 7224 KB Output is correct
24 Correct 26 ms 4292 KB Output is correct
25 Correct 34 ms 5680 KB Output is correct
26 Correct 34 ms 4412 KB Output is correct
27 Correct 93 ms 8760 KB Output is correct
28 Correct 52 ms 7968 KB Output is correct
29 Correct 23 ms 4040 KB Output is correct
30 Correct 58 ms 7060 KB Output is correct
31 Correct 70 ms 7992 KB Output is correct
32 Correct 16 ms 3980 KB Output is correct
33 Correct 26 ms 4776 KB Output is correct
34 Correct 88 ms 700 KB Output is correct
35 Correct 93 ms 704 KB Output is correct
36 Correct 74 ms 596 KB Output is correct
37 Correct 89 ms 688 KB Output is correct
38 Correct 77 ms 596 KB Output is correct
39 Correct 65 ms 724 KB Output is correct
40 Correct 64 ms 828 KB Output is correct
41 Correct 89 ms 684 KB Output is correct
42 Correct 97 ms 740 KB Output is correct
43 Correct 111 ms 716 KB Output is correct
44 Correct 108 ms 956 KB Output is correct
45 Correct 3727 ms 9368 KB Output is correct
46 Correct 3102 ms 9332 KB Output is correct
47 Correct 3650 ms 9404 KB Output is correct
48 Incorrect 3405 ms 9192 KB Output isn't correct
49 Halted 0 ms 0 KB -