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Submission #56991

# Submission time Handle Problem Language Result Execution time Memory
56991 2018-07-13T12:29:46 Z Mahmoud_Adel Watching (JOI13_watching) C++14
0 / 100
 259 ms 2808 KB 
#include <bits/stdc++.h>
#include <ext/pb_ds/detail/standard_policies.hpp>
#include <ext/pb_ds/assoc_container.hpp> // Common file
#include <ext/pb_ds/tree_policy.hpp> // Including tree_order_statistics_node_update


#define f first
#define s second
#define pb push_back
#define mp make_pair
#define clr(dp,i) memset(dp,i,sizeof(dp))
#define opt     ios_base::sync_with_stdio(NULL);cin.tie(NULL);cout.tie(NULL);

using namespace std;
using namespace __gnu_pbds;
//typedef tree<int, null_type, less<int>, rb_tree_tag,
//tree_order_statistics_node_update> oset;
typedef long long ll;
typedef long double ld;
typedef unsigned long long ull;
typedef pair<int, int> pii;
const long long mod = 1e9+7;
const ld pi = 3.14159265358979323846264338327950288;
//==================================================
int n, p, q, w, ans, a[2001];
map<pair<int, pii>, bool> dp;
bool check(int i=0, int remp=p, int remq=q, int mx = -1)
{
	if(i == n)
	return 1;
	if(dp.count(mp(i, pii(remp, remq))))
	return dp[mp(i, pii(remp, remq))];
	bool &ret = dp[mp(i, pii(remp, remq))];
	if(mx > a[i])
	ret = check(i+1, remp, remq, mx);
	else
	{
		ret = 0;
		if(remp)
		ret = check(i+1, remp-1, remq, a[i]+w);
		if(remq)
		ret = ret | check(i+1, remp, remq-1, a[i] + 2 * w);
	}
	return ret;
}
int main()
{
	cin >> n >> p >> q;
	for(int i=0; i<n; i++)
	cin >> a[i];
	sort(a, a+n);
	if(p+q >= n)
	{
		cout << 1 << endl;
		return 0;
	}
	int s = 1, e = 1e9;
	while(s <= e)
	{
		dp.clear();
		int mid = (s+e)/2;
		w = mid;
		if(check())
		ans = mid, e = mid-1;
		else
		s = mid+1;
	}
	cout << ans << endl;
}

Subtask #1
0 / 50.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 384 KB Output is correct
2 Correct 2 ms 384 KB Output is correct
3 Correct 2 ms 432 KB Output is correct
4 Correct 2 ms 460 KB Output is correct
5 Correct 3 ms 516 KB Output is correct
6 Correct 3 ms 524 KB Output is correct
7 Correct 5 ms 700 KB Output is correct
8 Correct 7 ms 700 KB Output is correct
9 Incorrect 9 ms 700 KB Output isn't correct
10 Halted 0 ms 0 KB -

Subtask #2
0 / 50.0

# Verdict Execution time Memory Grader output
1 Correct 24 ms 1116 KB Output is correct
2 Correct 2 ms 1116 KB Output is correct
3 Correct 3 ms 1116 KB Output is correct
4 Correct 4 ms 1116 KB Output is correct
5 Correct 3 ms 1116 KB Output is correct
6 Correct 4 ms 1116 KB Output is correct
7 Incorrect 259 ms 2808 KB Output isn't correct
8 Halted 0 ms 0 KB -