oj.uz

Submission #128670

# Submission time Handle Problem Language Result Execution time Memory
128670 2019-07-11T08:17:42 Z jangwonyoung Sparklers (JOI17_sparklers) C++14
50 / 100
 2000 ms 10744 KB 
#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
#define fi first
#define se second
int n,k;
ll t;
ll x[100001];
bool got[100001];
struct mob{
	ll fi,se;
};
mob operator+(mob x,mob y){
	ll a=max(x.fi,x.fi-x.se+y.fi);
	ll b=x.se-x.fi+y.se-y.fi+a;
	return (mob){a,b};
}
bool operator<(mob x,mob y){
	bool sx=x.fi<x.se,sy=y.fi<y.se;
	if(sx!=sy) return sx>sy;
	if(x.fi<x.se) return x.fi<y.fi;
	return x.se>y.se;
}
multiset<pair<mob,int> >cave;
int cp[100001],cs[100001];
mob val[100001];
bool solve(ll s){
	ll blood=s;
	for(int i=1; i<=n ;i++) cp[i]=cs[i]=i;
	cave.clear();
	for(int i=1; i<k ;i++){
		val[i]={x[i+1]-x[i],s};
		cave.insert({val[i],i});
	}
	for(int i=n; i>k ;i--){
		val[i]={x[i]-x[i-1],s};
		cave.insert({val[i],i});
	}
	for(int i=1; i<n ;i++){
		auto cur=*cave.begin();
		cave.erase(cave.begin());
		int par=cur.se+(cur.se<k)-(cur.se>k);
		cp[cs[cur.se]]=cp[par];
		cs[cp[par]]=cs[cur.se];
		if(cp[par]==k){//execute
			blood-=cur.fi.fi;
			if(blood<0) return false;
			blood+=cur.fi.se;
		}
		else{//merge
			cave.erase(cave.find({val[cp[par]],cp[par]}));
			val[cp[par]]=val[cp[par]]+val[cur.se];
			cave.insert({val[cp[par]],cp[par]});
		}
	}	
	return true;
}
int main(){
	ios::sync_with_stdio(false);
	cin >> n >> k >> t;
	for(int i=1; i<=n ;i++){
		cin >> x[i];
	}
	ll l=0,r=1e9/t+1;
	while(l!=r){
		ll mid=(l+r)/2;
		if(solve(mid*t*2)) r=mid;
		else l=mid+1;
	}
	cout << l << endl;
}

Subtask #1
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 2 ms 376 KB Output is correct
8 Correct 2 ms 376 KB Output is correct
9 Correct 2 ms 376 KB Output is correct
10 Correct 2 ms 376 KB Output is correct
11 Correct 2 ms 376 KB Output is correct
12 Correct 2 ms 376 KB Output is correct
13 Correct 2 ms 380 KB Output is correct
14 Correct 2 ms 376 KB Output is correct
15 Correct 2 ms 376 KB Output is correct
16 Correct 3 ms 376 KB Output is correct
17 Correct 2 ms 376 KB Output is correct
18 Correct 2 ms 376 KB Output is correct
19 Correct 2 ms 380 KB Output is correct
20 Correct 2 ms 376 KB Output is correct
21 Correct 2 ms 376 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 2 ms 376 KB Output is correct
8 Correct 2 ms 376 KB Output is correct
9 Correct 2 ms 376 KB Output is correct
10 Correct 2 ms 376 KB Output is correct
11 Correct 2 ms 376 KB Output is correct
12 Correct 2 ms 376 KB Output is correct
13 Correct 2 ms 380 KB Output is correct
14 Correct 2 ms 376 KB Output is correct
15 Correct 2 ms 376 KB Output is correct
16 Correct 3 ms 376 KB Output is correct
17 Correct 2 ms 376 KB Output is correct
18 Correct 2 ms 376 KB Output is correct
19 Correct 2 ms 380 KB Output is correct
20 Correct 2 ms 376 KB Output is correct
21 Correct 2 ms 376 KB Output is correct
22 Correct 9 ms 376 KB Output is correct
23 Correct 5 ms 376 KB Output is correct
24 Correct 11 ms 376 KB Output is correct
25 Correct 16 ms 504 KB Output is correct
26 Correct 16 ms 516 KB Output is correct
27 Correct 16 ms 504 KB Output is correct
28 Correct 15 ms 504 KB Output is correct
29 Correct 16 ms 504 KB Output is correct
30 Correct 15 ms 504 KB Output is correct
31 Correct 16 ms 504 KB Output is correct
32 Correct 16 ms 516 KB Output is correct
33 Correct 15 ms 504 KB Output is correct
34 Correct 16 ms 508 KB Output is correct
35 Correct 15 ms 504 KB Output is correct
36 Correct 16 ms 504 KB Output is correct
37 Correct 16 ms 504 KB Output is correct
38 Correct 15 ms 504 KB Output is correct
39 Correct 15 ms 504 KB Output is correct
40 Correct 8 ms 376 KB Output is correct

Subtask #3
0 / 50.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 2 ms 376 KB Output is correct
8 Correct 2 ms 376 KB Output is correct
9 Correct 2 ms 376 KB Output is correct
10 Correct 2 ms 376 KB Output is correct
11 Correct 2 ms 376 KB Output is correct
12 Correct 2 ms 376 KB Output is correct
13 Correct 2 ms 380 KB Output is correct
14 Correct 2 ms 376 KB Output is correct
15 Correct 2 ms 376 KB Output is correct
16 Correct 3 ms 376 KB Output is correct
17 Correct 2 ms 376 KB Output is correct
18 Correct 2 ms 376 KB Output is correct
19 Correct 2 ms 380 KB Output is correct
20 Correct 2 ms 376 KB Output is correct
21 Correct 2 ms 376 KB Output is correct
22 Correct 9 ms 376 KB Output is correct
23 Correct 5 ms 376 KB Output is correct
24 Correct 11 ms 376 KB Output is correct
25 Correct 16 ms 504 KB Output is correct
26 Correct 16 ms 516 KB Output is correct
27 Correct 16 ms 504 KB Output is correct
28 Correct 15 ms 504 KB Output is correct
29 Correct 16 ms 504 KB Output is correct
30 Correct 15 ms 504 KB Output is correct
31 Correct 16 ms 504 KB Output is correct
32 Correct 16 ms 516 KB Output is correct
33 Correct 15 ms 504 KB Output is correct
34 Correct 16 ms 508 KB Output is correct
35 Correct 15 ms 504 KB Output is correct
36 Correct 16 ms 504 KB Output is correct
37 Correct 16 ms 504 KB Output is correct
38 Correct 15 ms 504 KB Output is correct
39 Correct 15 ms 504 KB Output is correct
40 Correct 8 ms 376 KB Output is correct
41 Correct 809 ms 7188 KB Output is correct
42 Correct 42 ms 632 KB Output is correct
43 Correct 231 ms 2424 KB Output is correct
44 Execution timed out 2045 ms 10744 KB Time limit exceeded
45 Halted 0 ms 0 KB -