Submission #86060

#	Time	Username	Problem	Language	Result	Execution time	Memory
86060		kraljlavova1	Krov (COCI17_krov)	C++11	56 / 140	1569 ms	1700 KiB

krov

#include<bits/stdc++.h>
using namespace std;
typedef long long int llint;
const int MAXN=5010;
const llint inf=1e18;
int n;
int h[MAXN];
llint sol=inf;
llint f(int v,int idx){
	llint ret=0;
	for(int i=0;i<n;i++){
		int eh=v-abs(idx-i);
		ret+=abs(eh-h[i]);
	}
	return ret;
}
llint solve(int idx){
	int lo=max(idx+1,n-idx),hi=1e9,mid;
	while(lo<hi){
		mid=(lo+hi)/2;
		llint f0=f(mid-1,idx);
		llint f1=f(mid,idx);
		llint f2=f(mid+1,idx);
		if(f0<=f1&&f1<=f2) hi=mid-1;
		else if(f0>=f1&&f1>=f2) lo=mid+1;
		else lo=hi=mid;
	}
	return f(lo,idx);
}
int main(){
	cin>>n;
	for(int i=0;i<n;i++){
		cin>>h[i];
	}
	for(int i=0;i<n;i++){
		sol=min(sol,solve(i));
	}
	cout<<sol<<"\n";
	return 0;
}

• Subtask 1: 14 / 14
• Subtask 2: 14 / 14
• Subtask 3: 14 / 14
• Subtask 4: 14 / 14
• Subtask 5: 0 / 14
• Subtask 6: 0 / 14
• Subtask 7: 0 / 14
• Subtask 8: 0 / 14
• Subtask 9: 0 / 14
• Subtask 10: 0 / 14