제출 #1286737

#제출 시각아이디문제언어결과실행 시간메모리
1286737Sofiatpc구경하기 (JOI13_watching)C++20
0 / 100
74 ms16208 KiB
#include <bits/stdc++.h> using namespace std; const int MAXN = 2005; int a[MAXN], dp[MAXN][MAXN], n, p, q; bool test(int w){ for(int i = n; i >= 1; i--){ int nxtp = upper_bound(a+1,a+1+n, a[i]+w-1)-a; int nxtq = upper_bound(a+1,a+1+n, a[i]+2*w-1)-a; for(int qtdp = 0; qtdp <= p; qtdp++){ dp[i][qtdp] = dp[nxtq][qtdp]+1; if(qtdp > 0)dp[i][qtdp] = min(dp[i][qtdp], dp[nxtp][qtdp-1]); } } return dp[1][p] <= q; } signed main(){ ios_base::sync_with_stdio(0); cin.tie(0); cin>>n>>p>>q; for(int i = 1; i <= n; i++)cin>>a[i]; sort(a+1,a+1+n); a[n+1] = 2*1e9; int l = 0, r = 5*1e8; while(l != r){ int mid = (l+r)/2; if(test(mid))r = mid; else l = mid+1; } cout<<l<<"\n"; }
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