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Submission #988468

# Submission time Handle Problem Language Result Execution time Memory
988468 2024-05-24T19:12:38 Z amirhoseinfar1385 Growing Vegetables is Fun 5 (JOI24_vegetables5) C++17
30 / 100
 5000 ms 75536 KB 
#include<bits/stdc++.h>
//#pragma GCC target("avx2")
//#pragma GCC optimize("O3,unroll-loops")
using namespace std;
const int maxn=300000+10,maxh=maxn*2;
int all[maxn][2],n,inf=1e9,kaf=(1<<20),sz,kk=(1<<19)-1,lnk[maxn][2];
vector<int>allb,allc,alla;

struct segment{
	int ps[(1<<21)],sum[(1<<21)];
	void clear(){
		memset(ps,0,sizeof(ps));
		memset(sum,0,sizeof(sum));
	}
	void upd(int i,int w){
		i+=kaf;
		sum[i]+=w;
		i>>=1;
		while(i>0){
			sum[i]+=w;
			ps[i]=min(ps[(i<<1)],sum[(i<<1)]+ps[(i<<1)^1]);
			i>>=1;
		}
		return ;
	}
}segsb,segpb,segsc,segpc;

void clear(){
	segsb.clear();
	segpb.clear();
	segsc.clear();
	segpc.clear();
}

void fastscan(int &number) { 
    register int c; 
    number = 0; 
    c = getchar(); 
    for (; (c>47 && c<58); c=getchar()) 
        number = number *10 + c - 48; 
} 

void vorod(){
	//cin>>n;
	fastscan(n);
	alla.push_back(-1);
	for(int i=0;i<n;i++){
		//cin>>all[i][0];
		fastscan(all[i][0]);
		alla.push_back(all[i][0]);
	}
	for(int i=n-1;i>=0;i--){
		//cin>>all[i][1];
		fastscan(all[i][1]);
		alla.push_back(all[i][1]);
	}
	sort(alla.begin(),alla.end());
	alla.resize(unique(alla.begin(),alla.end())-alla.begin());
	allb.resize(n);
	allc.resize(n);
	for(int i=0;i<n;i++){
	//	cin>>allb[i];
		fastscan(allb[i]);
	}
	for(int i=0;i<n;i++){
		//cin>>allc[i];
		fastscan(allc[i]);
	}
	sort(allb.begin(),allb.end());
	sort(allc.begin(),allc.end());
	for(int i=0;i<n;i++){
		lnk[i][0]=lower_bound(alla.begin(),alla.end(),all[i][0])-alla.begin();
		lnk[i][1]=lower_bound(alla.begin(),alla.end(),all[i][1])-alla.begin();
	}
	sz=alla.size();
}

void inssufb(int ind){
	segsb.upd(ind,1);
}

void inspsb(int ind){
	segpb.upd(maxh-ind,1);
}

void inssufc(int ind){
	segsc.upd(ind,1);
}

void inspsc(int ind){
	segpc.upd(maxh-ind,1);
}

void insb(int w,int ind){
	int l=lnk[w][ind];
	segsb.upd(l,-1);
	segpb.upd(maxh-l,-1);
}

void insc(int w,int ind){
	int l=lnk[w][ind];
	segsc.upd(l,-1);
	segpc.upd(maxh-l,-1);
}

void eraseb(int w,int ind){
	int l=lnk[w][ind];
	segsb.upd(l,1);
	segpb.upd(maxh-l,1);
}

void erasec(int w,int ind){
	int l=lnk[w][ind];
	segsc.upd(l,1);
	segpc.upd(maxh-l,1);
}

bool ch(){
	if(segpc.ps[1]<0||segsb.ps[1]<0||segsc.ps[1]<0||segpb.ps[1]<0){
		return 0;
	}
	return 1;
}

bool check(int mid){
	clear();
	int l=0,r=0;
	for(int i=0;i<n;i++){
		while(l<sz&&alla[l]<allb[i]-mid){
			l++;
		}
		inssufb(l);
		while(r<sz&&alla[r]<=allb[i]+mid){
			r++;
		}
		inspsb(r-1);
	}
	l=0,r=0;
	for(int i=0;i<n;i++){
		while(l<sz&&alla[l]<allc[i]-mid){
			l++;
		}
		inssufc(l);
		while(r<sz&&alla[r]<=allc[i]+mid){
			r++;
		}
		inspsc(r-1);
	}
	for(int i=0;i<n;i++){
		insb(i,0);
		insc(i,1);
	}
	for(int i=0,j=n-1;i<n;i++,j--){
		if(ch()==1){
			return 1;
		}
		eraseb(i,0);
		erasec(j,1);
		insb(j,1);
		insc(i,0);
	}
	return ch();
}

int solve(){
	int low=-1,high=1e9+5,mid;	
	while(high-low>1){
		mid=(high+low)/2;
		if(check(mid)){
			high=mid;
		}else{
			low=mid;
		}
	}	
	return high;
}

int main(){
	ios::sync_with_stdio(0);
	cin.tie(0);
	cout.tie(0);
	auto start = std::chrono::high_resolution_clock::now();
//	freopen("inp.txt","r",stdin);
	vorod();
//	auto end = std::chrono::high_resolution_clock::now();
  //  std::chrono::duration<double> duration = end - start;
    //std::cout << "vorod time: " << duration.count() << " seconds." << std::endl;
	int mainres=inf;
	mainres=solve();
	swap(allb,allc);
	mainres=min(mainres,solve());
	cout<<mainres<<"\n";
//    end = std::chrono::high_resolution_clock::now();
  // 	duration = end - start;
    //std::cout << "Execution time: " << duration.count() << " seconds." << std::endl;
}

Compilation message

Main.cpp: In function 'void fastscan(int&)':
Main.cpp:36:18: warning: ISO C++17 does not allow 'register' storage class specifier [-Wregister]
   36 |     register int c;
      |                  ^
Main.cpp: In function 'int main()':
Main.cpp:182:7: warning: variable 'start' set but not used [-Wunused-but-set-variable]
  182 |  auto start = std::chrono::high_resolution_clock::now();
      |       ^~~~~

Subtask #1
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 469 ms 68328 KB Output is correct
2 Correct 458 ms 68184 KB Output is correct
3 Correct 457 ms 68320 KB Output is correct
4 Correct 444 ms 68320 KB Output is correct
5 Correct 458 ms 68188 KB Output is correct
6 Correct 420 ms 68464 KB Output is correct
7 Correct 462 ms 68188 KB Output is correct
8 Correct 381 ms 68184 KB Output is correct
9 Correct 448 ms 68320 KB Output is correct
10 Correct 461 ms 68184 KB Output is correct
11 Correct 392 ms 68324 KB Output is correct
12 Correct 461 ms 68180 KB Output is correct

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 469 ms 68328 KB Output is correct
2 Correct 458 ms 68184 KB Output is correct
3 Correct 457 ms 68320 KB Output is correct
4 Correct 444 ms 68320 KB Output is correct
5 Correct 458 ms 68188 KB Output is correct
6 Correct 420 ms 68464 KB Output is correct
7 Correct 462 ms 68188 KB Output is correct
8 Correct 381 ms 68184 KB Output is correct
9 Correct 448 ms 68320 KB Output is correct
10 Correct 461 ms 68184 KB Output is correct
11 Correct 392 ms 68324 KB Output is correct
12 Correct 461 ms 68180 KB Output is correct
13 Correct 458 ms 68320 KB Output is correct
14 Correct 449 ms 68324 KB Output is correct
15 Correct 376 ms 68324 KB Output is correct
16 Correct 458 ms 68340 KB Output is correct
17 Correct 459 ms 68324 KB Output is correct
18 Correct 456 ms 68320 KB Output is correct
19 Correct 380 ms 68328 KB Output is correct
20 Correct 462 ms 68172 KB Output is correct
21 Correct 464 ms 68432 KB Output is correct
22 Correct 454 ms 68188 KB Output is correct
23 Correct 466 ms 68176 KB Output is correct
24 Correct 449 ms 68432 KB Output is correct
25 Correct 459 ms 68188 KB Output is correct

Subtask #3
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 469 ms 68328 KB Output is correct
2 Correct 458 ms 68184 KB Output is correct
3 Correct 457 ms 68320 KB Output is correct
4 Correct 444 ms 68320 KB Output is correct
5 Correct 458 ms 68188 KB Output is correct
6 Correct 420 ms 68464 KB Output is correct
7 Correct 462 ms 68188 KB Output is correct
8 Correct 381 ms 68184 KB Output is correct
9 Correct 448 ms 68320 KB Output is correct
10 Correct 461 ms 68184 KB Output is correct
11 Correct 392 ms 68324 KB Output is correct
12 Correct 461 ms 68180 KB Output is correct
13 Correct 458 ms 68320 KB Output is correct
14 Correct 449 ms 68324 KB Output is correct
15 Correct 376 ms 68324 KB Output is correct
16 Correct 458 ms 68340 KB Output is correct
17 Correct 459 ms 68324 KB Output is correct
18 Correct 456 ms 68320 KB Output is correct
19 Correct 380 ms 68328 KB Output is correct
20 Correct 462 ms 68172 KB Output is correct
21 Correct 464 ms 68432 KB Output is correct
22 Correct 454 ms 68188 KB Output is correct
23 Correct 466 ms 68176 KB Output is correct
24 Correct 449 ms 68432 KB Output is correct
25 Correct 459 ms 68188 KB Output is correct
26 Correct 703 ms 68184 KB Output is correct
27 Correct 698 ms 68360 KB Output is correct
28 Correct 763 ms 68440 KB Output is correct
29 Correct 478 ms 68436 KB Output is correct
30 Correct 631 ms 68368 KB Output is correct
31 Correct 654 ms 68364 KB Output is correct
32 Correct 556 ms 68432 KB Output is correct
33 Correct 450 ms 68336 KB Output is correct
34 Correct 719 ms 68176 KB Output is correct
35 Correct 777 ms 68444 KB Output is correct
36 Correct 556 ms 68436 KB Output is correct
37 Correct 873 ms 68360 KB Output is correct
38 Correct 948 ms 68364 KB Output is correct
39 Correct 873 ms 68436 KB Output is correct
40 Correct 606 ms 68436 KB Output is correct

Subtask #4
0 / 37.0

# Verdict Execution time Memory Grader output
1 Execution timed out 5042 ms 75536 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #5
0 / 33.0

# Verdict Execution time Memory Grader output
1 Correct 469 ms 68328 KB Output is correct
2 Correct 458 ms 68184 KB Output is correct
3 Correct 457 ms 68320 KB Output is correct
4 Correct 444 ms 68320 KB Output is correct
5 Correct 458 ms 68188 KB Output is correct
6 Correct 420 ms 68464 KB Output is correct
7 Correct 462 ms 68188 KB Output is correct
8 Correct 381 ms 68184 KB Output is correct
9 Correct 448 ms 68320 KB Output is correct
10 Correct 461 ms 68184 KB Output is correct
11 Correct 392 ms 68324 KB Output is correct
12 Correct 461 ms 68180 KB Output is correct
13 Correct 458 ms 68320 KB Output is correct
14 Correct 449 ms 68324 KB Output is correct
15 Correct 376 ms 68324 KB Output is correct
16 Correct 458 ms 68340 KB Output is correct
17 Correct 459 ms 68324 KB Output is correct
18 Correct 456 ms 68320 KB Output is correct
19 Correct 380 ms 68328 KB Output is correct
20 Correct 462 ms 68172 KB Output is correct
21 Correct 464 ms 68432 KB Output is correct
22 Correct 454 ms 68188 KB Output is correct
23 Correct 466 ms 68176 KB Output is correct
24 Correct 449 ms 68432 KB Output is correct
25 Correct 459 ms 68188 KB Output is correct
26 Correct 703 ms 68184 KB Output is correct
27 Correct 698 ms 68360 KB Output is correct
28 Correct 763 ms 68440 KB Output is correct
29 Correct 478 ms 68436 KB Output is correct
30 Correct 631 ms 68368 KB Output is correct
31 Correct 654 ms 68364 KB Output is correct
32 Correct 556 ms 68432 KB Output is correct
33 Correct 450 ms 68336 KB Output is correct
34 Correct 719 ms 68176 KB Output is correct
35 Correct 777 ms 68444 KB Output is correct
36 Correct 556 ms 68436 KB Output is correct
37 Correct 873 ms 68360 KB Output is correct
38 Correct 948 ms 68364 KB Output is correct
39 Correct 873 ms 68436 KB Output is correct
40 Correct 606 ms 68436 KB Output is correct
41 Execution timed out 5042 ms 75536 KB Time limit exceeded
42 Halted 0 ms 0 KB -