oj.uz

Submission #554775

# Submission time Handle Problem Language Result Execution time Memory
554775 2022-04-29T11:37:04 Z Koosha_mv Road Construction (JOI21_road_construction) C++14
65 / 100
 10000 ms 52504 KB 
#include <bits/stdc++.h>
using namespace std;
#define dbgv(v) cout<<#v<<" = "; f(i,0,v.size()) cout<<v[i]<<" "; cout<<endl
#define dbga(a,x,y) cout<<#a<<" = "; f(i,x,y) cout<<a[i]<<" "; cout<<endl
#define erorp(x) cout<<#x<<"={"<<x.F<<" , "<<x.S<<"}"<<endl
#define eror(x) cout<<#x<<'='<<(x)<<endl
#define f_(i,a,b) for(int i=a;i>=b;i--)
#define f(i,a,b) for(int i=a;i<b;i++)
#define nb(x) __builtin_popcount(x)
#define all(v) v.begin(),v.end()
#define bit(n,k) (((n)>>(k))&1)
#define Add(x,y) x=(x+y)%mod
#define maxm(a,b) a=max(a,b)
#define minm(a,b) a=min(a,b)
#define lst(x) x[x.size()-1]
#define sz(x) int(x.size())
#define mp make_pair
#define ll long long
#define pb push_back
#define S second
#define F first
#define int ll

typedef pair<int,int> pii;

const int N=6e5+99,inf=1e10;
const pii pinf={-10*inf,-1};

int n,k,a[N],b[N],pos[N];
pii seg[N];
vector<int> ans;
vector<pii> vec;
map<int,vector<int>> mark;

void add(int x){
	seg[x+n]={vec[x].F+vec[x].S,x};
	for(x+=n;x>1;x>>=1){
		seg[x>>1]=max(seg[x],seg[x^1]);
	}
}
void del(int x){
	seg[x+n]=pinf;
	for(x+=n;x>1;x>>=1){
		seg[x>>1]=max(seg[x],seg[x^1]);
	}
}
pii get(int l,int r){
	pii res=pinf;
	for(l+=n,r+=n;l<r;l>>=1,r>>=1){
		if(l&1) maxm(res,seg[l++]);
		if(r&1) maxm(res,seg[--r]);
	}
	return res;
}
bool check(int val,int type=0){
	fill(seg,seg+N,pinf);
	ans.clear();
	int cnt=0;
	for(auto p : mark){
		vector<int> v=p.S;
		for(auto x : v) add(x);
		for(auto x : v){
			int p=upper_bound(all(vec),mp(vec[x].F,-inf))-vec.begin();
			vector<int> op;
			for(pii e=get(0,p);vec[x].F+vec[x].S-e.F<=val;e=get(0,p)){
				cnt++;
				op.pb(e.S);
				del(e.S);
				if(type==1) ans.pb(vec[x].F+vec[x].S-e.F);
				if(cnt>=k) return 0;
			}
			for(auto id : op) add(id);
		}
	}
	return 1;
}
vector<int> solve(){
	f(i,0,n) vec.pb({a[i],b[i]});
	sort(all(vec));
	f(i,0,n) pos[i]=lower_bound(all(vec),mp(a[i],b[i]))-vec.begin();
	f(i,0,n) mark[b[i]].pb(pos[i]);
	
	int l=0,r=inf;
	while(l+1<r){
		int mid=(l+r)>>1;
		if(check(mid)) l=mid;
		else r=mid;
	}
	check(l,1);
	vec.clear();
	mark.clear();
	while(ans.size()<k) ans.pb(r);
	return ans;
}

int32_t main(){
	ios:: sync_with_stdio(0), cin.tie(0), cout.tie(0);
	cin>>n>>k;
	f(i,0,n) cin>>a[i]>>b[i];
	vector<int> A,B;
	A=solve();
	f(i,0,n) a[i]=-a[i],swap(a[i],b[i]);
	B=solve();
	for(auto x : B) A.pb(x);
	sort(all(A));
	f(i,0,k) cout<<A[i]<<" ";
}
/*
3 2
0 1
0 0
2 0

3 2
-1 0
0 0
0 2
*/

Compilation message

road_construction.cpp: In function 'std::vector<long long int> solve()':
road_construction.cpp:92:18: warning: comparison of integer expressions of different signedness: 'std::vector<long long int>::size_type' {aka 'long unsigned int'} and 'long long int' [-Wsign-compare]
   92 |  while(ans.size()<k) ans.pb(r);
      |        ~~~~~~~~~~^~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 2788 ms 20452 KB Output is correct
2 Correct 2816 ms 20488 KB Output is correct
3 Correct 1504 ms 20560 KB Output is correct
4 Correct 1212 ms 20540 KB Output is correct
5 Correct 2400 ms 19468 KB Output is correct
6 Correct 98 ms 9820 KB Output is correct

Subtask #2
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 8326 ms 52504 KB Output is correct
2 Correct 8363 ms 52076 KB Output is correct
3 Correct 936 ms 20244 KB Output is correct
4 Correct 7354 ms 51864 KB Output is correct
5 Correct 8023 ms 52124 KB Output is correct
6 Correct 8042 ms 52196 KB Output is correct
7 Correct 7832 ms 51348 KB Output is correct

Subtask #3
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 5740 ms 46904 KB Output is correct
2 Correct 4739 ms 46904 KB Output is correct
3 Correct 66 ms 9684 KB Output is correct
4 Correct 5149 ms 46784 KB Output is correct
5 Correct 2779 ms 21828 KB Output is correct

Subtask #4
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 5740 ms 46904 KB Output is correct
2 Correct 4739 ms 46904 KB Output is correct
3 Correct 66 ms 9684 KB Output is correct
4 Correct 5149 ms 46784 KB Output is correct
5 Correct 2779 ms 21828 KB Output is correct
6 Correct 6321 ms 46836 KB Output is correct
7 Correct 6587 ms 46864 KB Output is correct
8 Correct 62 ms 9684 KB Output is correct
9 Correct 65 ms 9728 KB Output is correct
10 Correct 6491 ms 43904 KB Output is correct
11 Correct 5050 ms 46916 KB Output is correct
12 Correct 2895 ms 21840 KB Output is correct

Subtask #5
27.0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 2788 ms 20452 KB Output is correct
2 Correct 2816 ms 20488 KB Output is correct
3 Correct 1504 ms 20560 KB Output is correct
4 Correct 1212 ms 20540 KB Output is correct
5 Correct 2400 ms 19468 KB Output is correct
6 Correct 98 ms 9820 KB Output is correct
7 Correct 8412 ms 34532 KB Output is correct
8 Correct 8457 ms 34428 KB Output is correct
9 Correct 1230 ms 20472 KB Output is correct
10 Correct 7337 ms 33488 KB Output is correct
11 Correct 5987 ms 32776 KB Output is correct
12 Correct 5804 ms 25036 KB Output is correct
13 Correct 4686 ms 23216 KB Output is correct

Subtask #6
0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 2788 ms 20452 KB Output is correct
2 Correct 2816 ms 20488 KB Output is correct
3 Correct 1504 ms 20560 KB Output is correct
4 Correct 1212 ms 20540 KB Output is correct
5 Correct 2400 ms 19468 KB Output is correct
6 Correct 98 ms 9820 KB Output is correct
7 Correct 8326 ms 52504 KB Output is correct
8 Correct 8363 ms 52076 KB Output is correct
9 Correct 936 ms 20244 KB Output is correct
10 Correct 7354 ms 51864 KB Output is correct
11 Correct 8023 ms 52124 KB Output is correct
12 Correct 8042 ms 52196 KB Output is correct
13 Correct 7832 ms 51348 KB Output is correct
14 Correct 5740 ms 46904 KB Output is correct
15 Correct 4739 ms 46904 KB Output is correct
16 Correct 66 ms 9684 KB Output is correct
17 Correct 5149 ms 46784 KB Output is correct
18 Correct 2779 ms 21828 KB Output is correct
19 Correct 6321 ms 46836 KB Output is correct
20 Correct 6587 ms 46864 KB Output is correct
21 Correct 62 ms 9684 KB Output is correct
22 Correct 65 ms 9728 KB Output is correct
23 Correct 6491 ms 43904 KB Output is correct
24 Correct 5050 ms 46916 KB Output is correct
25 Correct 2895 ms 21840 KB Output is correct
26 Correct 8412 ms 34532 KB Output is correct
27 Correct 8457 ms 34428 KB Output is correct
28 Correct 1230 ms 20472 KB Output is correct
29 Correct 7337 ms 33488 KB Output is correct
30 Correct 5987 ms 32776 KB Output is correct
31 Correct 5804 ms 25036 KB Output is correct
32 Correct 4686 ms 23216 KB Output is correct
33 Execution timed out 10033 ms 50912 KB Time limit exceeded
34 Halted 0 ms 0 KB -