题解 | 单组_二维数组

package main

import (
	"bufio"
	"fmt"
	"os"
	"strconv"
	"strings"
)

func main() {
	scanner := bufio.NewScanner(os.Stdin)
    scanner.Scan()
    line := strings.Fields(scanner.Text())
    n,_ := strconv.Atoi(line[0])
    m,_ := strconv.Atoi(line[1])
    total := int64(0)
    for i:=0;i<n;i++{
        scanner.Scan()
        line = strings.Fields(scanner.Text())
        for j:=0;j<m;j++{
            a,_ := strconv.ParseInt(line[j], 10, 64)
            total+=a
        }
    }
    fmt.Println(total)
}