AcWing 800. 数组元素的方针和

标题描述

给定两个升序排序的有序数组 A 和 B，以及一个方针值 x。

数组下标从 0 开端。

请你求出满意 A[i] B[j]=x 的数对 (i,j)。

数据确保有唯一解。

输入格局

榜首行包括三个整数 n,m,x，别离表示 A 的长度，B 的长度以及方针值 x。

第二行包括 n 个整数，表示数组 A。

第三行包括 m 个整数，表示数组 B。

输出格局

共一行，包括两个整数 i 和 j。

数据规模

数组长度不超过 10^5。

同一数组内元素各不相同。

1≤数组元素≤10^9

输入样例：

4 5 6
1 2 4 7
3 4 6 8 9

输出样例：

1 1

C

#include <iostream>
using namespace std;
const int N = 1e5   10;
int n, m;
long long x;
long long a[N], b[N];
int main() {
    scanf("%d%d%d", &n, &m, &x);
    for (int i = 0; i < n; i  ) scanf("%lld", &a[i]);
    for (int i = 0; i < m; i  ) scanf("%lld", &b[i]);
    for (int i = 0, j = m - 1; i < n; i  ) {
        while (j >= 0 && a[i]   b[j] > x) j--;
        if (j >= 0 && a[i]   b[j] == x) cout << i << ' ' << j << endl;
    }
    return 0;
}

Go

package main
import (
	"bufio"
	"os"
	"strconv"
	"strings"
)
func main() {
	var n, m int
	var x int64
	reader := bufio.NewReader(os.Stdin)
	line, _ := reader.ReadString('n')
	params := strings.Fields(line)
	n, _ = strconv.Atoi(params[0])
	m, _ = strconv.Atoi(params[1])
	x, _ = strconv.ParseInt(params[2], 10, 64)
	a := make([]int64, n)
	b := make([]int64, m)
	line, _ = reader.ReadString('n')
	nums := strings.Fields(line)
	for i := 0; i < n; i   {
		a[i], _ = strconv.ParseInt(nums[i], 10, 64)
	}
	line, _ = reader.ReadString('n')
	nums = strings.Fields(line)
	for i := 0; i < m; i   {
		b[i], _ = strconv.ParseInt(nums[i], 10, 64)
	}
	writer := bufio.NewWriter(os.Stdout)
	defer writer.Flush()
	for i, j := 0, m-1; i < n; i   {
		for j >= 0 && a[i] b[j] > x {
			j--
		}
		if j >= 0 && a[i] b[j] == x {
			writer.WriteString(strconv.Itoa(i)   " "   strconv.Itoa(j)   "n")
			return
		}
	}
}

package main
import (
	"bufio"
	"fmt"
	"os"
)
func main() {
	var n, m int
	var tmp, x int64
	reader := bufio.NewReader(os.Stdin)
	fmt.Fscanf(reader, "%d %d %dn", &n, &m, &x)
	a := make(map[int64]int)
	for i := 0; i < n; i   {
		fmt.Fscanf(reader, "%d", &tmp)
		a[tmp] = i
	}
	fmt.Fscanf(reader, "n")
	writer := bufio.NewWriter(os.Stdout)
	defer writer.Flush()
	for j := 0; j < m; j   {
		fmt.Fscanf(reader, "%d", &tmp)
		if value, ok := a[x-tmp]; ok {
			fmt.Fprintf(writer, "%d %dn", value, j)
		}
	}
}

package main
import (
	"bufio"
	"fmt"
	"os"
	"strconv"
	"strings"
)
func main() {
	reader := bufio.NewReader(os.Stdin)
	line, _ := reader.ReadString('n')
	params := strings.Fields(line)
	n, _ := strconv.Atoi(params[0])
	m, _ := strconv.Atoi(params[1])
	x, _ := strconv.ParseInt(params[2], 10, 64)
	a := make(map[int64]int)
	line, _ = reader.ReadString('n')
	nums := strings.Fields(line)
	for i := 0; i < n; i   {
		tmp, _ := strconv.ParseInt(nums[i], 10, 64)
		a[tmp] = i
	}
	writer := bufio.NewWriter(os.Stdout)
	defer writer.Flush()
	line, _ = reader.ReadString('n')
	nums = strings.Fields(line)
	for j := 0; j < m; j   {
		tmp, _ := strconv.ParseInt(nums[j], 10, 64)
		if value, ok := a[x-tmp]; ok {
			fmt.Fprintf(writer, "%d %dn", value, j)
		}
	}
}