惩罚

#include <iostream>#include<cmath>using namespace std;int sushu(int a){    int k,b,l =1;    k=sqrt(a);    for (b=2;b<=k;b++)    if(a%b==0)    l=0;    return l;}int main(){    int n,m,k[1000],a,j=0,i;    cin>>n>>m;    for (a=n;a<=m;a++)    {        if(sushu(a))        {            k[j]=a;j++;}    }    n=k[0];m=-1;    for(i=0;i<j;i++)    {        if(k[i]-n>m)            m=k[i]-n;        n=k[i];}        cout<<m;        return 0;        }

输出结果：

学习总结：心情不好