結果

問題 No.818 Dinner time
ユーザー holegumaholeguma
提出日時 2019-07-17 13:10:47
言語 Java21
(openjdk 21)
結果
AC  
実行時間 136 ms / 2,000 ms
コード長 3,837 bytes
コンパイル時間 3,536 ms
コンパイル使用メモリ 74,940 KB
実行使用メモリ 57,604 KB
最終ジャッジ日時 2023-08-23 07:54:41
合計ジャッジ時間 8,218 ms
ジャッジサーバーID
（参考情報） 		judge14 / judge15
このコードへのチャレンジ（β）

テストケース

テストケース表示
入力 結果 実行時間
実行使用メモリ
testcase_00 AC 44 ms
49,248 KB
testcase_01 AC 44 ms
49,088 KB
testcase_02 AC 42 ms
49,280 KB
testcase_03 AC 44 ms
49,304 KB
testcase_04 AC 43 ms
49,328 KB
testcase_05 AC 44 ms
49,028 KB
testcase_06 AC 42 ms
48,964 KB
testcase_07 AC 42 ms
49,236 KB
testcase_08 AC 43 ms
49,064 KB
testcase_09 AC 43 ms
49,240 KB
testcase_10 AC 42 ms
49,048 KB
testcase_11 AC 43 ms
49,140 KB
testcase_12 AC 43 ms
49,136 KB
testcase_13 AC 44 ms
48,976 KB
testcase_14 AC 43 ms
49,252 KB
testcase_15 AC 43 ms
49,028 KB
testcase_16 AC 43 ms
49,244 KB
testcase_17 AC 133 ms
57,104 KB
testcase_18 AC 109 ms
55,036 KB
testcase_19 AC 105 ms
54,716 KB
testcase_20 AC 136 ms
57,592 KB
testcase_21 AC 108 ms
56,956 KB
testcase_22 AC 100 ms
54,452 KB
testcase_23 AC 102 ms
54,784 KB
testcase_24 AC 122 ms
57,604 KB
testcase_25 AC 107 ms
54,536 KB
testcase_26 AC 98 ms
54,688 KB
testcase_27 AC 102 ms
56,940 KB
testcase_28 AC 110 ms
54,692 KB
testcase_29 AC 113 ms
57,200 KB
testcase_30 AC 108 ms
57,036 KB
testcase_31 AC 103 ms
57,424 KB
testcase_32 AC 102 ms
57,196 KB
権限があれば一括ダウンロードができます

ソースコード

diff # 

import java.io.IOException;
import java.io.InputStream;
import java.io.PrintWriter;
import java.util.Arrays;
import java.util.InputMismatchException;
import java.util.NoSuchElementException;

public class Main {

	static PrintWriter out;
	static InputReader ir;
	static boolean debug = false;

	static void solve() {
		int n = ir.nextInt();
		int m = ir.nextInt();
		long[][] a = new long[n][];
		for (int i = 0; i < n; i++) {
			a[i] = ir.nextLongArray(2);
		}
		long[] sum = new long[n + 1];
		for (int i = 0; i < n; i++)
			sum[i + 1] = sum[i] + Math.max(a[i][0], a[i][1]);
		long[] suma = new long[n + 1];
		suma[n] = sum[n];
		for (int i = n - 1; i >= 0; i--) {
			suma[i] = Math.max(suma[i + 1], sum[i]);
		}
		long ma = Long.MIN_VALUE;
		long tot = 0;
		for (int i = 0; i < n; i++) {
			if (a[i][0] >= 0) {
				tot += a[i][0] * (m - 1) + Math.max(a[i][0], a[i][1]);
			} else if (a[i][1] >= 0) {
				tot += a[i][1];
			} else {
				tot += Math.max(a[i][0] * m, a[i][1]);
			}
			ma = Math.max(ma, tot + Math.max(0, suma[i + 1] - sum[i + 1]));
		}
		out.print(ma);
	}

	public static void main(String[] args) {
		ir = new InputReader(System.in);
		out = new PrintWriter(System.out);
		solve();
		out.flush();
	}

	static class InputReader {

		private InputStream in;
		private byte[] buffer = new byte[1024];
		private int curbuf;
		private int lenbuf;

		public InputReader(InputStream in) {
			this.in = in;
			this.curbuf = this.lenbuf = 0;
		}

		public boolean hasNextByte() {
			if (curbuf >= lenbuf) {
				curbuf = 0;
				try {
					lenbuf = in.read(buffer);
				} catch (IOException e) {
					throw new InputMismatchException();
				}
				if (lenbuf <= 0)
					return false;
			}
			return true;
		}

		private int readByte() {
			if (hasNextByte())
				return buffer[curbuf++];
			else
				return -1;
		}

		private boolean isSpaceChar(int c) {
			return !(c >= 33 && c <= 126);
		}

		private void skip() {
			while (hasNextByte() && isSpaceChar(buffer[curbuf]))
				curbuf++;
		}

		public boolean hasNext() {
			skip();
			return hasNextByte();
		}

		public String next() {
			if (!hasNext())
				throw new NoSuchElementException();
			StringBuilder sb = new StringBuilder();
			int b = readByte();
			while (!isSpaceChar(b)) {
				sb.appendCodePoint(b);
				b = readByte();
			}
			return sb.toString();
		}

		public int nextInt() {
			if (!hasNext())
				throw new NoSuchElementException();
			int c = readByte();
			while (isSpaceChar(c))
				c = readByte();
			boolean minus = false;
			if (c == '-') {
				minus = true;
				c = readByte();
			}
			int res = 0;
			do {
				if (c < '0' || c > '9')
					throw new InputMismatchException();
				res = res * 10 + c - '0';
				c = readByte();
			} while (!isSpaceChar(c));
			return (minus) ? -res : res;
		}

		public long nextLong() {
			if (!hasNext())
				throw new NoSuchElementException();
			int c = readByte();
			while (isSpaceChar(c))
				c = readByte();
			boolean minus = false;
			if (c == '-') {
				minus = true;
				c = readByte();
			}
			long res = 0;
			do {
				if (c < '0' || c > '9')
					throw new InputMismatchException();
				res = res * 10 + c - '0';
				c = readByte();
			} while (!isSpaceChar(c));
			return (minus) ? -res : res;
		}

		public double nextDouble() {
			return Double.parseDouble(next());
		}

		public int[] nextIntArray(int n) {
			int[] a = new int[n];
			for (int i = 0; i < n; i++)
				a[i] = nextInt();
			return a;
		}

		public long[] nextLongArray(int n) {
			long[] a = new long[n];
			for (int i = 0; i < n; i++)
				a[i] = nextLong();
			return a;
		}

		public char[][] nextCharMap(int n, int m) {
			char[][] map = new char[n][m];
			for (int i = 0; i < n; i++)
				map[i] = next().toCharArray();
			return map;
		}
	}

	static void tr(Object... o) {
		if (debug)
			out.println(Arrays.deepToString(o));
	}
}
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