题目2305:蓝桥杯2019年第十届省赛真题-等差数列

#include<iostream>

#include<algorithm>

using namespace std;

int a100000;

int main(){

int n;

cin>>n;

for(int i=0;i<n;i++){

cin>>ai;

}

sort(a,a+n);

int minn=100000009;

for(int i=0;i<n-1;i++){

minn=min(minn,ai+1-ai);

}

if(minn>0&&(an-1-a0)%minn==0){

cout<<(an-1-a0)/minn+1;

}else{

cout<<n;//当num=0时，直接输出

}

return 0;

}