#include <iostream> #include <cmath> using namespace std; int main() { int a; cin>>a; if(a%30){ cout<<'3'<<' '; } if(a%50){ cout<<"5"<<" "; } if(a%7==0){ cout<<"7"<<" "; } else if(a%3!=0 && a%5!=0 && a%7!=0){ cout<<"n"; } }

保过

没别的 就是暴力枚举(doge

#include<iostream> using namespace std; int main(){ int a; cin >>a; if(a%30) cout << 3 << " "; if(a%50) cout << 5 << " "; if(a%7==0) cout << 7 << " "; if(a%3!=0&&a%5!=0&&a%7!=0) cout << "n"; }

#include<iostream> using namespace std; int main(){ int n; cin>>n; if(n%30&&n%50&&n%70){ cout<<"3 5 7"; } else if(n%30&&n%50){ cout<<"3 5"; } else if(n%30&&n%70){ cout<<"3 7"; } else if(n%50&&n%70){ cout<<"5 7"; } else if(n%30){ cout<<"3"; } else if(n%50){ cout<<"5"; } else if(n%70){ cout<<"7"; } else{ cout<<"n"; } }

拜拜~

简单，但比较长。

#include<iostream> using namespace std; int main() { int n; cin>>n; if(n%30) cout<<"3"<<" "; if(n%50) cout<<"5"<<" "; if(n%7==0) cout<<"7"<<" "; if(n%3!=0&&n%5!=0&&n%7!=0) cout<<"n"; }

#include<iostream> using namespace std; int main(){ int n; cin>>n; if(n%30)cout<<"3"<<" "; if(n%50)cout<<"5"<<" "; if(n%7==0)cout<<"7"; if(n%3!=0 && n%5!=0 && n%7!=0)cout<<"n"; return 0; }

#include<bits/stdc++.h> using namespace std; int main(){ int x; cin>>x; if(x%30){ cout<<3<<" "; }if(x%50){ cout<<5<<" "; }if(x%7==0){ cout<<7<<" "; }if(x%3!=0&&x%5!=0&&x%7!=0){ cout<<"n"; } return 0; }

#include <iostream> using namespace std; int main(){ int a,s = 0; cin >> a; if (a % 3 == 0) cout << "3 "; else s += 1; if (a % 5 == 0) cout << "5 "; else s += 1; if (a % 7 == 0) cout << "7 "; else s += 1; if (s == 3) cout << "n"; return 0; }