题目描述
Takahashi has a strong stomach. He never gets a stomachache from eating something whose "best-by" date is at most X days earlier. He gets a stomachache if the "best-by" date of the food is X+1 or more days earlier, though.
Other than that, he finds the food delicious if he eats it not later than the "best-by" date. Otherwise, he does not find it delicious.
Takahashi bought some food A days before the "best-by" date, and ate it B days after he bought it.
Write a program that outputs delicious if he found it delicious, safe if he did not found it delicious but did not get a stomachache either, and dangerous if he got a stomachache.
Constraints
1≤X,A,B≤109
输入
Input is given from Standard Input in the following format:
X A B
输出
Print delicious if Takahashi found the food delicious; print safe if he neither found it delicious nor got a stomachache; print dangerous if he got a stomachache.
样例输入
4 3 6
样例输出
safe
提示
He ate the food three days after the "best-by" date. It was not delicious or harmful for him.
这个题意真的伤人，看了半天愣是没看懂
#include<stdio.h>
#include<string.h>
#include<iostream>
#include<vector>
#include<algorithm>
using namespace std;
const int maxn=2e5+5;
int main()
{
int x, a, b;
cin>>x>>a>>b;
if(b<=a+1)
printf("delicious\n");
else if(b<=a+x)
printf("safe\n");
else
printf("dangerous\n");
return 0;
}