답안 #128784

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
128784 2019-07-11T09:29:19 Z jangwonyoung Sparklers (JOI17_sparklers) C++14
100 / 100
1933 ms 6376 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;
}
priority_queue<pair<mob,int>,vector<pair<mob,int> >,greater<pair<mob,int> > >cave;
int cp[100001],cs[100001];
bool vis[100001];
mob val[100001];
bool solve(ll s){
	ll blood=s;
	for(int i=1; i<=n ;i++) cp[i]=cs[i]=i;
	for(int i=1; i<=n ;i++) vis[i]=false;
	while(!cave.empty()) cave.pop();
	for(int i=1; i<k ;i++){
		val[i]={x[i+1]-x[i],s};
		cave.push({val[i],i});
	}
	for(int i=n; i>k ;i--){
		val[i]={x[i]-x[i-1],s};
		cave.push({val[i],i});
	}
	while(!cave.empty()){
		auto cur=cave.top();cave.pop();
		if(vis[cur.se] || val[cur.se].fi!=cur.fi.fi || val[cur.se].se!=cur.fi.se) continue;
		vis[cur.se]=true;
		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
			val[cp[par]]=val[cp[par]]+val[cur.se];
			cave.push({val[cp[par]],cp[par]});
		}
	}	
	return true;
}
void read(int& x){
	char c=getchar();
	while(c<48 || c>57) c=getchar();
	x=0;
	while(c>=48 && c<=57){
		x=x*10+c-48;
		c=getchar();
	}
}
void read(ll& x){
	char c=getchar();
	while(c<48 || c>57) c=getchar();
	x=0;
	while(c>=48 && c<=57){
		x=x*10+c-48;
		c=getchar();
	}
}
int main(){
	ios::sync_with_stdio(false);
	read(n);read(k);read(t);
	for(int i=1; i<=n ;i++) read(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;
}
# 결과 실행 시간 메모리 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 376 KB Output is correct
14 Correct 2 ms 376 KB Output is correct
15 Correct 2 ms 376 KB Output is correct
16 Correct 2 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 376 KB Output is correct
20 Correct 2 ms 376 KB Output is correct
21 Correct 2 ms 376 KB Output is correct
# 결과 실행 시간 메모리 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 376 KB Output is correct
14 Correct 2 ms 376 KB Output is correct
15 Correct 2 ms 376 KB Output is correct
16 Correct 2 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 376 KB Output is correct
20 Correct 2 ms 376 KB Output is correct
21 Correct 2 ms 376 KB Output is correct
22 Correct 7 ms 376 KB Output is correct
23 Correct 4 ms 376 KB Output is correct
24 Correct 8 ms 504 KB Output is correct
25 Correct 11 ms 504 KB Output is correct
26 Correct 11 ms 376 KB Output is correct
27 Correct 11 ms 376 KB Output is correct
28 Correct 11 ms 504 KB Output is correct
29 Correct 11 ms 504 KB Output is correct
30 Correct 11 ms 504 KB Output is correct
31 Correct 11 ms 504 KB Output is correct
32 Correct 11 ms 380 KB Output is correct
33 Correct 11 ms 376 KB Output is correct
34 Correct 11 ms 380 KB Output is correct
35 Correct 11 ms 376 KB Output is correct
36 Correct 11 ms 504 KB Output is correct
37 Correct 11 ms 504 KB Output is correct
38 Correct 11 ms 376 KB Output is correct
39 Correct 11 ms 504 KB Output is correct
40 Correct 7 ms 504 KB Output is correct
# 결과 실행 시간 메모리 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 376 KB Output is correct
14 Correct 2 ms 376 KB Output is correct
15 Correct 2 ms 376 KB Output is correct
16 Correct 2 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 376 KB Output is correct
20 Correct 2 ms 376 KB Output is correct
21 Correct 2 ms 376 KB Output is correct
22 Correct 7 ms 376 KB Output is correct
23 Correct 4 ms 376 KB Output is correct
24 Correct 8 ms 504 KB Output is correct
25 Correct 11 ms 504 KB Output is correct
26 Correct 11 ms 376 KB Output is correct
27 Correct 11 ms 376 KB Output is correct
28 Correct 11 ms 504 KB Output is correct
29 Correct 11 ms 504 KB Output is correct
30 Correct 11 ms 504 KB Output is correct
31 Correct 11 ms 504 KB Output is correct
32 Correct 11 ms 380 KB Output is correct
33 Correct 11 ms 376 KB Output is correct
34 Correct 11 ms 380 KB Output is correct
35 Correct 11 ms 376 KB Output is correct
36 Correct 11 ms 504 KB Output is correct
37 Correct 11 ms 504 KB Output is correct
38 Correct 11 ms 376 KB Output is correct
39 Correct 11 ms 504 KB Output is correct
40 Correct 7 ms 504 KB Output is correct
41 Correct 525 ms 4212 KB Output is correct
42 Correct 28 ms 636 KB Output is correct
43 Correct 155 ms 1780 KB Output is correct
44 Correct 1787 ms 6248 KB Output is correct
45 Correct 1796 ms 6376 KB Output is correct
46 Correct 1767 ms 6248 KB Output is correct
47 Correct 1933 ms 6252 KB Output is correct
48 Correct 1841 ms 6248 KB Output is correct
49 Correct 1834 ms 6248 KB Output is correct
50 Correct 1767 ms 6248 KB Output is correct
51 Correct 1818 ms 6248 KB Output is correct
52 Correct 1810 ms 6252 KB Output is correct
53 Correct 1819 ms 6252 KB Output is correct
54 Correct 1787 ms 6248 KB Output is correct
55 Correct 1717 ms 6252 KB Output is correct
56 Correct 1837 ms 6248 KB Output is correct
57 Correct 1777 ms 6248 KB Output is correct
58 Correct 1805 ms 6256 KB Output is correct
59 Correct 787 ms 6252 KB Output is correct
60 Correct 1814 ms 6312 KB Output is correct
61 Correct 1884 ms 6252 KB Output is correct
62 Correct 1783 ms 6252 KB Output is correct
63 Correct 1918 ms 6248 KB Output is correct
64 Correct 1909 ms 6252 KB Output is correct
65 Correct 1885 ms 6252 KB Output is correct
66 Correct 1861 ms 6252 KB Output is correct
67 Correct 1854 ms 6252 KB Output is correct
68 Correct 1889 ms 6256 KB Output is correct
69 Correct 1865 ms 6252 KB Output is correct