[20250220] BOJ / G2 / 기지국 / 권혁준

Author: oncsr

khj20006/202502/20 BOJ G2 기지국.md

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+```cpp
+
+#include <iostream>
+#include <vector>
+#include <algorithm>
+using namespace std;
+using ll = long long;
+
+int main()
+{
+	cin.tie(0)->sync_with_stdio(0);
+
+	int N;
+	ll inf = 1e18;
+	cin >> N;
+	vector<pair<ll, ll>> A(N);
+	for (auto &[x, y] : A) cin >> x >> y;
+	sort(A.begin(), A.end());
+
+	vector<ll> dp(10000, inf);
+	dp[0] = abs(A[0].second) * 2;
+	for (int i = 1; i < N; i++) {
+		int p = i;
+		ll maxabs = -1;
+		while (i < N && A[p].first == A[i].first) maxabs = max(maxabs, abs(A[i++].second));
+		i--;
+		for (int j = p - 1; j >= 0; j--) {
+			maxabs = max(maxabs, abs(A[j+1].second));
+			dp[i] = min(dp[i], dp[j] + max(maxabs * 2, A[i].first - A[j + 1].first));
+		}
+		maxabs = max(maxabs, abs(A[0].second));
+		dp[i] = min(dp[i], max(maxabs * 2, A[i].first - A[0].first));
+	}
+	cout << dp[N - 1];
+
+}
+
+```