oj.uz

Submission #127181

# Submission time Handle Problem Language Result Execution time Memory
127181 2019-07-09T04:26:32 Z Utaha Sparklers (JOI17_sparklers) C++14
50 / 100
 51 ms 1528 KB 
/*input
3 2 10
0
200
300
*/
#include <bits/stdc++.h>
#pragma GCC optimize("unroll-loops,no-stack-protector")
using namespace std;
typedef long long ll;
typedef long double ld;
typedef pair<int,int> pii;
typedef pair<ll,ll> pll;
typedef pair<ld,ld> pdd;
#define IOS ios_base::sync_with_stdio(0); cin.tie(0)
#define ALL(a) a.begin(),a.end()
#define SZ(a) ((int)a.size())
#define F first
#define S second
#define REP(i,n) for(int i=0;i<((int)n);i++)
#define pb emplace_back
#define MP(a,b) make_pair(a,b)
#define SORT_UNIQUE(c) (sort(c.begin(),c.end()), c.resize(distance(c.begin(),unique(c.begin(),c.end()))))
#define GET_POS(c,x) (lower_bound(c.begin(),c.end(),x)-c.begin())
template<typename T1,typename T2>
ostream& operator<<(ostream& out,pair<T1,T2> P){
	out<<'('<<P.F<<','<<P.S<<')';
	return out;
}

//}}}
const ll maxn=1005;
const ll maxlg=__lg(maxn)+2;
const ll INF64=8000000000000000000LL;
const int INF=0x3f3f3f3f;
const ll MOD=ll(1e9+7);
const ld PI=acos(-1);
const ld eps=1e-9;
//const ll p=880301;
//const ll P=31;

ll mypow(ll a,ll b){
	ll res=1LL;
	while(b){
		if(b&1) res=res*a%MOD;
		a=a*a%MOD;
		
		b>>=1;
	}
	return res;
}
ll n,k,t;
ll a[maxn];

bool dp[maxn][maxn];

int main(){
	IOS;
	cin>>n>>k>>t;
	k--;
	REP(i,n) cin>>a[i];

	ll l=-1,r=1000000000LL;

	while(l!=r-1){
		ll mid=(l+r)/2;

		dp[k][k]=1;
		for(int len=1;len<n;len++){
			for(int i=0;i+len<n;i++){
				if(a[i+len]-a[i]<=len*t*2*mid&&(dp[i][i+len-1]||dp[i+1][i+len])){
					dp[i][i+len]=1;
				}
				else dp[i][i+len]=0;
			}
		}
		// cout<<mid<<'\n';
		// REP(i,n) REP(j,n) cout<<dp[i][j]<<" \n"[j==n-1];
		if(dp[0][n-1]==1) r=mid;
		else l=mid;
	}
	cout<<r<<'\n';
	return 0;
}

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 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 380 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 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 380 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 25 ms 1144 KB Output is correct
23 Correct 14 ms 888 KB Output is correct
24 Correct 24 ms 1144 KB Output is correct
25 Correct 47 ms 1272 KB Output is correct
26 Correct 48 ms 1400 KB Output is correct
27 Correct 51 ms 1444 KB Output is correct
28 Correct 47 ms 1400 KB Output is correct
29 Correct 47 ms 1400 KB Output is correct
30 Correct 48 ms 1400 KB Output is correct
31 Correct 47 ms 1528 KB Output is correct
32 Correct 48 ms 1272 KB Output is correct
33 Correct 46 ms 1272 KB Output is correct
34 Correct 47 ms 1400 KB Output is correct
35 Correct 47 ms 1400 KB Output is correct
36 Correct 47 ms 1400 KB Output is correct
37 Correct 47 ms 1400 KB Output is correct
38 Correct 46 ms 1400 KB Output is correct
39 Correct 47 ms 1400 KB Output is correct
40 Correct 44 ms 1408 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 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 380 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 25 ms 1144 KB Output is correct
23 Correct 14 ms 888 KB Output is correct
24 Correct 24 ms 1144 KB Output is correct
25 Correct 47 ms 1272 KB Output is correct
26 Correct 48 ms 1400 KB Output is correct
27 Correct 51 ms 1444 KB Output is correct
28 Correct 47 ms 1400 KB Output is correct
29 Correct 47 ms 1400 KB Output is correct
30 Correct 48 ms 1400 KB Output is correct
31 Correct 47 ms 1528 KB Output is correct
32 Correct 48 ms 1272 KB Output is correct
33 Correct 46 ms 1272 KB Output is correct
34 Correct 47 ms 1400 KB Output is correct
35 Correct 47 ms 1400 KB Output is correct
36 Correct 47 ms 1400 KB Output is correct
37 Correct 47 ms 1400 KB Output is correct
38 Correct 46 ms 1400 KB Output is correct
39 Correct 47 ms 1400 KB Output is correct
40 Correct 44 ms 1408 KB Output is correct
41 Runtime error 3 ms 632 KB Execution killed with signal 11 (could be triggered by violating memory limits)
42 Halted 0 ms 0 KB -