문제 링크: https://www.acmicpc.net/problem/12000
12000번: Circular Barn (Bronze)
Being a fan of contemporary architecture, Farmer John has built a new barn in the shape of a perfect circle. Inside, the barn consists of a ring of \(n\) rooms, numbered clockwise from \(1 \ldots n\) around the perimeter of the barn (\(3 \leq n \leq 1,000\
www.acmicpc.net
각 방에 exterior door를 열어놨을때의 총거리합들을 구하고, 그중에 최소값을 구함.
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#include <bits/stdc++.h>
using namespace std;
int n, room[1001];
int main() {
ios_base::sync_with_stdio(0);
cin.tie(0);
cin >> n;
for(int i = 1; i <= n; i++) cin >> room[i];
int ans = 1e9;
for(int i = 1; i <= n; i++) {
int total = 0;
for(int j = 1; j <= n; j++) {
if(j >= i) total += (j - i) * room[j];
else total += (j + n - i) * room[j];
}
ans = min(ans, total);
}
cout << ans << '\n';
return 0;
}
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