题解 | 小红的优惠券
小红的优惠券
https://www.nowcoder.com/practice/e991a011f96444f3a6ad57943d39f4ad
package main
import (
"bufio"
"fmt"
"os"
)
func main() {
buf := bufio.NewReader(os.Stdin)
var n,m int
fmt.Fscan(buf, &n,&m)
type sale struct{
price,save int
}
var a,b int
max := 0
for i:=0;i<m;i++{
fmt.Fscan(buf,&a,&b)
if a<=n && b>=max{
max = b
}
}
fmt.Print(n-max)
}
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