diff --git "a/Ukj0ng/202509/8 BOJ G3 \355\226\211\353\240\254 \352\263\261\354\205\210 \354\210\234\354\204\234.md" "b/Ukj0ng/202509/8 BOJ G3 \355\226\211\353\240\254 \352\263\261\354\205\210 \354\210\234\354\204\234.md" new file mode 100644 index 00000000..0813a699 --- /dev/null +++ "b/Ukj0ng/202509/8 BOJ G3 \355\226\211\353\240\254 \352\263\261\354\205\210 \354\210\234\354\204\234.md" @@ -0,0 +1,53 @@ +``` +import java.io.*; + import java.util.*; + +public class Main { + private static final BufferedReader br = new BufferedReader(new InputStreamReader(System.in)); + private static final BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(System.out)); + private static int[][] matrix, dp; + private static int N; + + public static void main(String[] args) throws IOException { + init(); + DP(); + + bw.write(dp[1][N] + "\n"); + bw.flush(); + bw.close(); + br.close(); + } + + private static void init() throws IOException { + N = Integer.parseInt(br.readLine()); + + matrix = new int[N+1][2]; + dp = new int[N+1][N+1]; + + for (int i = 1; i <= N; i++) { + StringTokenizer st = new StringTokenizer(br.readLine()); + matrix[i][0] = Integer.parseInt(st.nextToken()); + matrix[i][1] = Integer.parseInt(st.nextToken()); + } + } + + private static void DP() { + for (int i = 1; i < N; i++) { + dp[i][i+1] = matrix[i][0] * matrix[i][1] * matrix[i+1][1]; + } + + for (int len = 2; len <= N; len++) { + for (int start = 1; start <= N - len + 1; start++) { + int end = start + len - 1; + dp[start][end] = Integer.MAX_VALUE; + + for (int k = start; k < end; k++) { + int cost = dp[start][k] + dp[k+1][end] + + matrix[start][0] * matrix[k][1] * matrix[end][1]; + dp[start][end] = Math.min(dp[start][end], cost); + } + } + } + } +} +```