题解 | #挂科危险#

#include <stdio.h>
int main()
{
    int score;
    while(scanf("%d",&score)!=EOF)
    {
        if(score>=10)
            printf("Danger++");
        if(score>=4&&score<=9)
            printf("Danger");
        if(score>=0&&score<=3)
            printf("Good");
    }
    
    
    return 0;
}