結果

問題 No.1583 Building Blocks
ユーザー cyclerecycle9cyclerecycle9
提出日時 2021-09-13 04:14:15
言語 Java21
(openjdk 21)
結果
AC  
実行時間 93 ms / 2,000 ms
コード長 8,886 bytes
コンパイル時間 3,057 ms
コンパイル使用メモリ 91,364 KB
実行使用メモリ 63,084 KB
最終ジャッジ日時 2023-10-12 03:06:15
合計ジャッジ時間 7,639 ms
ジャッジサーバーID
（参考情報） 		judge13 / judge12
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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
49,968 KB
testcase_01 AC 44 ms
49,548 KB
testcase_02 AC 44 ms
49,660 KB
testcase_03 AC 65 ms
54,264 KB
testcase_04 AC 47 ms
49,572 KB
testcase_05 AC 45 ms
49,572 KB
testcase_06 AC 66 ms
51,476 KB
testcase_07 AC 82 ms
54,348 KB
testcase_08 AC 48 ms
49,596 KB
testcase_09 AC 84 ms
56,568 KB
testcase_10 AC 46 ms
49,568 KB
testcase_11 AC 46 ms
49,988 KB
testcase_12 AC 76 ms
54,168 KB
testcase_13 AC 82 ms
56,384 KB
testcase_14 AC 61 ms
51,612 KB
testcase_15 AC 75 ms
54,632 KB
testcase_16 AC 82 ms
56,684 KB
testcase_17 AC 86 ms
56,904 KB
testcase_18 AC 50 ms
49,484 KB
testcase_19 AC 93 ms
61,452 KB
testcase_20 AC 81 ms
52,848 KB
testcase_21 AC 60 ms
50,564 KB
testcase_22 AC 62 ms
51,012 KB
testcase_23 AC 50 ms
49,612 KB
testcase_24 AC 88 ms
56,980 KB
testcase_25 AC 44 ms
49,804 KB
testcase_26 AC 84 ms
56,048 KB
testcase_27 AC 60 ms
50,552 KB
testcase_28 AC 83 ms
56,724 KB
testcase_29 AC 57 ms
52,712 KB
testcase_30 AC 48 ms
49,828 KB
testcase_31 AC 81 ms
56,632 KB
testcase_32 AC 67 ms
54,664 KB
testcase_33 AC 89 ms
63,084 KB
testcase_34 AC 44 ms
49,540 KB
testcase_35 AC 68 ms
54,232 KB
testcase_36 AC 83 ms
56,752 KB
testcase_37 AC 49 ms
49,544 KB
testcase_38 AC 45 ms
49,504 KB
testcase_39 AC 44 ms
49,584 KB
testcase_40 AC 45 ms
49,644 KB
testcase_41 AC 45 ms
49,448 KB
testcase_42 AC 45 ms
49,532 KB
testcase_43 AC 44 ms
49,944 KB
testcase_44 AC 45 ms
49,656 KB
testcase_45 AC 44 ms
47,388 KB
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ソースコード

diff # 

import java.io.IOException;
import java.io.InputStream;
import java.io.PrintWriter;
import java.math.BigDecimal;
import java.math.RoundingMode;
import java.util.*;

public class Main {
	static final long MOD1=1000000007;
	static final long MOD=998244353;
	static int ans=0;
	public static void main(String[] args){
		PrintWriter out = new PrintWriter(System.out);
		InputReader sc=new InputReader(System.in);
		int N = sc.nextInt();
		long[] w = new long[N];
		long[] s = new long[N];
		ArrayList<Pair> list = new ArrayList<>();
		for (int i = 0; i < s.length; i++) {
			w[i] = sc.nextLong();
			s[i] = sc.nextLong();
			list.add(new Pair(w[i] + s[i], i));
		}
		Collections.sort(list);
		long[][] dp = new long[N+1][N+1];
		for (int i = 0; i < dp.length; i++) {
			Arrays.fill(dp[i], Long.MAX_VALUE/2);
		}
		dp[0][0] = 0;
		for (int i = 1; i <= N; i++) {
			int k = list.get(i-1).y;
			for (int j = 0; j <= N; j++) {
				dp[i][j] = dp[i-1][j];
				if(j-1>=0&&dp[i-1][j-1]<=s[k])dp[i][j] = Math.min(dp[i][j], dp[i-1][j-1] + w[k]);
			}
		}
		for (int i = N; i >= 0; i--) {
			if (dp[N][i]<Long.MAX_VALUE/2){
				System.out.println(i);
				return;
			}
		}
   	}
	static class Pair implements Comparable<Pair>{
    	public long x;
    	public int y;
    	public Pair(long x,int y) {
    		this.x=x;
    		this.y=y;
    	}
    	@Override
    	public boolean equals(Object obj) {
    		if(obj instanceof Pair) {
    			Pair other = (Pair) obj;
    			return other.x==this.x && other.y==this.y;
    		}
    		return false;
    	}//同値の定義
    	@Override
    	public int hashCode() {
    		return Objects.hash(this.x,this.y);
    	}//これ書かないと正しく動作しない（要　勉強）
    	@Override
    	public int compareTo( Pair p){
    		if (this.x>p.x) {
    			return 1;
    		}
    		else if (this.x<p.x) {
    			return -1;
    		}
    		else {
    			return 0;
    		}
    	}
    }
	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 double[] nextDoubleArray(int n) {
			double[] a = new double[n];
			for (int i = 0; i < n; i++)
				a[i] = nextDouble();
			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;
		}
	}
}
//funはlamda式で定義
//prodで取得,setで更新(一点加算なら更新でおｋ)
//二ブタンも出来る
//SegTree<Integer> segTree=new SegTree<Integer>(N, (x,y)->x+y, 0);使用例
class SegTree<S> {
	    final int MAX;

	    final int N;
	    final java.util.function.BinaryOperator<S> op;
	    final S E;

	    final S[] data;

	    @SuppressWarnings("unchecked")
	    public SegTree(int n, java.util.function.BinaryOperator<S> op, S e) {
	        this.MAX = n;
	        int k = 1;
	        while (k < n) k <<= 1;
	        this.N = k;
	        this.E = e;
	        this.op = op;
	        this.data = (S[]) new Object[N << 1];
	        java.util.Arrays.fill(data, E);
	    }

	    public SegTree(S[] dat, java.util.function.BinaryOperator<S> op, S e) {
	        this(dat.length, op, e);
	        build(dat);
	    }

	    private void build(S[] dat) {
	        int l = dat.length;
	        System.arraycopy(dat, 0, data, N, l);
	        for (int i = N - 1; i > 0; i--) {
	            data[i] = op.apply(data[i << 1 | 0], data[i << 1 | 1]);
	        }
	    }

	    public void set(int p, S x) {
	        exclusiveRangeCheck(p);
	        data[p += N] = x;
	        p >>= 1;
	        while (p > 0) {
	            data[p] = op.apply(data[p << 1 | 0], data[p << 1 | 1]);
	            p >>= 1;
	        }
	    }

	    public S get(int p) {
	        exclusiveRangeCheck(p);
	        return data[p + N];
	    }

	    public S prod(int l, int r) {
	        if (l > r) {
	            throw new IllegalArgumentException(
	                String.format("Invalid range: [%d, %d)", l, r)
	            );
	        }
	        inclusiveRangeCheck(l);
	        inclusiveRangeCheck(r);
	        S sumLeft = E;
	        S sumRight = E;
	        l += N; r += N;
	        while (l < r) {
	            if ((l & 1) == 1) sumLeft = op.apply(sumLeft, data[l++]);
	            if ((r & 1) == 1) sumRight = op.apply(data[--r], sumRight);
	            l >>= 1; r >>= 1;
	        }
	        return op.apply(sumLeft, sumRight);
	    }

	    public S allProd() {
	        return data[1];
	    }

	    public int maxRight(int l, java.util.function.Predicate<S> f) {
	        inclusiveRangeCheck(l);
	        if (!f.test(E)) {
	            throw new IllegalArgumentException("Identity element must satisfy the condition.");
	        }
	        if (l == MAX) return MAX;
	        l += N;
	        S sum = E;
	        do {
	            l >>= Integer.numberOfTrailingZeros(l);
	            if (!f.test(op.apply(sum, data[l]))) {
	                while (l < N) {
	                    l = l << 1;
	                    if (f.test(op.apply(sum, data[l]))) {
	                        sum = op.apply(sum, data[l]);
	                        l++;
	                    }
	                }
	                return l - N;
	            }
	            sum = op.apply(sum, data[l]);
	            l++;
	        } while ((l & -l) != l);
	        return MAX;
	    }

	    public int minLeft(int r, java.util.function.Predicate<S> f) {
	        inclusiveRangeCheck(r);
	        if (!f.test(E)) {
	            throw new IllegalArgumentException("Identity element must satisfy the condition.");
	        }
	        if (r == 0) return 0;
	        r += N;
	        S sum = E;
	        do {
	            r--;
	            while (r > 1 && (r & 1) == 1) r >>= 1;
	            if (!f.test(op.apply(data[r], sum))) {
	                while (r < N) {
	                    r = r << 1 | 1;
	                    if (f.test(op.apply(data[r], sum))) {
	                        sum = op.apply(data[r], sum);
	                        r--;
	                    }
	                }
	                return r + 1 - N;
	            }
	            sum = op.apply(data[r], sum);
	        } while ((r & -r) != r);
	        return 0;
	    }

	    private void exclusiveRangeCheck(int p) {
	        if (p < 0 || p >= MAX) {
	            throw new IndexOutOfBoundsException(
	                String.format("Index %d out of bounds for the range [%d, %d).", p, 0, MAX)
	            );
	        }
	    }

	    private void inclusiveRangeCheck(int p) {
	        if (p < 0 || p > MAX) {
	            throw new IndexOutOfBoundsException(
	                String.format("Index %d out of bounds for the range [%d, %d].", p, 0, MAX)
	            );
	        }
	    }
	}
0