oj.uz

답안 #4548

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
4548 2013-10-26T11:21:21 Z cki86201 전봇대 (KOI13_pole) C++
100 / 100
 28 ms 1476 KB 
#include<stdio.h>
#include<algorithm>
#include<string.h>
#include<vector>
#include<math.h>
#include<stdlib.h>
#include<set>
#include<ctype.h>
using namespace std;

#define X first
#define Y second
typedef long long ll;
typedef pair<int,int> Pi;

int n;
ll ans;
int p[100010];

ll f(int x)
{
	int i;
	ll ret=0;
	for(i=1;i<n;i++){
		ret+=abs((ll)p[i]-(ll)i*x);
	}
	return ret;
}

int main()
{
	int i;
	scanf("%d",&n);
	for(i=0;i<n;i++)scanf("%d",p+i);
	int st=0,en=1e9,mi;
	while(st<=en){
		mi=(st+en)>>1;
		ll t=f(mi);
		if(t<f(mi+1))ans=t,en=mi-1;
		else st=mi+1;
	}
	printf("%lld\n",ans);
	return 0;
}

Subtask #1
11.0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 1476 KB Output is correct
2 Correct 0 ms 1476 KB Output is correct
3 Correct 0 ms 1476 KB Output is correct
4 Correct 0 ms 1476 KB Output is correct
5 Correct 0 ms 1476 KB Output is correct
6 Correct 0 ms 1476 KB Output is correct
7 Correct 0 ms 1476 KB Output is correct
8 Correct 0 ms 1476 KB Output is correct
9 Correct 0 ms 1476 KB Output is correct
10 Correct 0 ms 1476 KB Output is correct

Subtask #2
21.0 / 21.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 1476 KB Output is correct
2 Correct 0 ms 1476 KB Output is correct
3 Correct 0 ms 1476 KB Output is correct
4 Correct 0 ms 1476 KB Output is correct
5 Correct 0 ms 1476 KB Output is correct
6 Correct 0 ms 1476 KB Output is correct
7 Correct 0 ms 1476 KB Output is correct
8 Correct 0 ms 1476 KB Output is correct

Subtask #3
31.0 / 31.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 1476 KB Output is correct
2 Correct 0 ms 1476 KB Output is correct
3 Correct 0 ms 1476 KB Output is correct
4 Correct 0 ms 1476 KB Output is correct
5 Correct 0 ms 1476 KB Output is correct
6 Correct 0 ms 1476 KB Output is correct

Subtask #4
37.0 / 37.0

# 결과 실행 시간 메모리 Grader output
1 Correct 28 ms 1476 KB Output is correct
2 Correct 28 ms 1476 KB Output is correct
3 Correct 20 ms 1476 KB Output is correct
4 Correct 28 ms 1476 KB Output is correct
5 Correct 28 ms 1476 KB Output is correct
6 Correct 28 ms 1476 KB Output is correct