#include <iostream>
using namespace std;

int main() {
    int num;
    cin >> num;
    
    bool d3 = (num % 3 == 0);
    bool d5 = (num % 5 == 0);
    bool d7 = (num % 7 == 0);
    
    int count = d3 + d5 + d7;
    
    if (count == 3) {
        cout << "3\n5\n7";
    } else if (count == 2) {
        if (d3 && d5) cout << "3\n5";
        else if (d3 && d7) cout << "3\n7";
        else cout << "5\n7";
    } else if (count == 1) {
        if (d3) cout << "3";
        else if (d5) cout << "5";
        else cout << "7";
    } else {
        cout << "n";
    }
    
    return 0;
}

#include #include #include

using namespace std;

int main() { int n; cin >> n; vector divisors;

if (n % 3 == 0) divisors.push_back(3);
if (n % 5 == 0) divisors.push_back(5);
if (n % 7 == 0) divisors.push_back(7);

sort(divisors.begin(), divisors.end());

if (divisors.empty()) {
    cout << 'n' << endl;
} else {
    for (int d : divisors) {
        cout << d << endl;
    }
}

return 0;

}

n = int(input())
if n % 3 != 0 and n % 5 != 0 and n % 7 != 0:
    print('n')
    exit(0)
else:
    if n % 3 == 0:
        print('3 ', end = '')
    if n % 5 == 0:
        print('5 ', end = '')
    if n % 7 == 0:
        print('7 ', end = '')
exit(0)

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

#include <iostream>
#include <cstdio>
#include <fstream>
#include <cmath>
#include <deque>
#include <vector>
#include <queue>
#include <string>
#include <cstring>
#include <map>
#include <stack>
#include <set> 
using namespace std;
int main()
{
    int a;
	cin>>a;
	if(a%3==0 && a%5==0 && a%7==0)
	{
		cout<<"3 5 7";
	}
	else if(a%3==0 && a%5==0)
	{
		cout<<"3 5";
	}
	else if(a%3==0 && a%7==0)
	{
		cout<<"3 7";
	}
	else if(a%5==0 && a%7==0)
	{
		cout<<"5 7";
	}
	else if(a%3 ==0)
	{
		cout<<"3";
	}
	else if(a%5 ==0)
	{
		cout<<"5";
	}
	else if(a%7 ==0)
	{
		cout<<"7";
	}
	else
	cout<<"n";
}

补一个Python代码

a=int(input())
b=False
if a%3==0:
    print(3,end=" ")
    b=True;
if a%5==0:
    print(5,end=" ")
    b=True;
if a%7==0:
    print(7,end=" ")
    b=True;
if not b:
    print("n")

#include<bits/stdc++.h>
using namespace std;
const int N=1e5+10;
int main(){
	long long a;
	cin>>a;
	if(a%3==0){
		cout<<"3"<<" ";
		if(a%5==0){
			cout<<"5"<<" ";
			if(a%7==0){
				cout<<"7"<<" ";
			}
		}
		if(a%7==0){
			cout<<"7"<<" ";
		}
	}
	else if(a%5==0){
		cout<<"5"<<" ";
		if(a%7==0){
			cout<<"7"<<" ";
		}
	}
	else if(a%7==0){
		cout<<"7"<<" ";
	}
	if(a%3!=0&&a%5!=0&&a%7!=0){
		cout<<"n";
	}
	return 0;
}

90分，哪错了？？？

#include using namespace std; const int N=1e3+10; const int INF=0x3f3f3f3f; int a; int main(){ cin>>a; if(a%30&&a%50&&a%70) cout<<"3 5 7"; else if((a%30&&a%50)) cout<<"3 5"; else if(a%30&&a%70) cout<<"3 7"; else if(a%70&&a%50) cout<<"5 7"; else if(a%30) cout<<"3"; else if(a%50) cout<<"5"; else if(a%70) cout<<"7"; else cout<<"n"; } 笨蛋做法

#include

using namespace std;

int main()

{

int a;

cin>>a;

if(a%30&&a%50&&a%7==0)

{ cout<<3<<" "<<5<<" "<<7;

}

else if(a%30&&a%50)

{

cout<<3<<" "<<5;

}

else if(a%30&&a%70)

{

cout<<3<<" "<<7;

}

else if(a%50&&a%70)

{

cout<<5<<" "<<7;

}

else if(a%3==0)

{

cout<<3;

}

else if(a%5==0)

{

cout<<5;

}

else if(a%7==0)

{

cout<<7;

}

else

{

cout<<"n";

}

return 0;

}

#include<stdio.h> #include using namespace std; int main() { int n; cin>>n; if((n%30)&&(n%50)&&(n%70)) { cout<<3<<" "<<5<<" "<<7<<endl; }else if((n%30)&&(n%50)&&(n%7!=0)) { cout<<3<<" "<<5<<endl; }else if((n%30)&&(n%5!=0)&&(n%70)) { cout<<3<<" "<<7<<endl; }else if((n%3!=0)&&(n%50)&&(n%70)) { cout<<5<<" "<<7<<endl; }else if((n%30)&&(n%5!=0)&&(n%7!=0)) { cout<<3<<endl; }else if((n%3!=0)&&(n%50)&&(n%7!=0)) { cout<<5<<endl; }else if((n%3!=0)&&(n%5!=0)&&(n%70)) { cout<<7<<endl; }else { cout<<"n"<<endl; } }

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

#include

using namespace std;

int main(){

int a,b,c,d;

cin>>a;

if(a%3==0) {

cout<<"3"<<" ";

d=1;	
}

if(a%5==0) {

cout<<"5"<<" ";

d=1;	

}


if(a%7==0) {

cout<<"7"<<" ";

d=1;	

}
if(d!=1) cout<<"n";

}

#include <stdio.h> int main() { int n; scanf("%d", &n); bool a = false;

if (n % 3 == 0) {
    printf("%d ", 3);
    a = true;
}

if (n % 5 == 0) {
    printf("%d ", 5);
    a = true;
}

if (n % 7 == 0) {
    printf("%d ", 7);
    a = true;
}

if (!a)
    printf("n");

}

#include<bits/stdc++.h>
using namespace std;
const int N=1e5+10;
int main(){
	long long a;
	cin>>a;
	if(a%3==0){
		cout<<"3"<<" ";
		if(a%5==0){
			cout<<"5"<<" ";
			if(a%7==0){
				cout<<"7"<<" ";
			}
		}
		if(a%7==0){
			cout<<"7"<<" ";
		}
	}
	else if(a%5==0){
		cout<<"5"<<" ";
		if(a%7==0){
			cout<<"7"<<" ";
		}
	}
	else if(a%7==0){
		cout<<"7"<<" ";
	}
	if(a%3!=0&&a%5!=0&&a%7!=0){
		cout<<"n";
	}
	return 0;
}

头文件有点多，有点复杂（上网查的），点个关注再走吧！ 求求了！！！！！！！！！！！！！！！！！！！！！！！！！！！！！！！！！！！！！！！！！！

#include #include #include #include #include #include #include #include #include #include #include #include using namespace std; int main() { int a; cin>>a; if(a%30 && a%50 && a%70) { cout<<"3 5 7"; } else if(a%30 && a%50) { cout<<"3 5"; } else if(a%30 && a%70) { cout<<"3 7"; } else if(a%50 && a%7==0) { cout<<"5 7"; } else if(a%3 ==0) { cout<<"3"; } else if(a%5 ==0) { cout<<"5"; } else if(a%7 ==0) { cout<<"7"; } else cout<<"n"; }

• a = int(input())
• if a % 3 == 0 and a % 5 != 0 and a % 7 != 0:
• print("3")
• if a % 5 == 0 and a % 3 !=0 and a % 7 != 0:
• print("5")
• if a % 7 == 0 and a % 3 !=0 and a % 5 != 0:
• print("7")
• if a % 3 == 0 and a % 5 == 0 and a % 7 != 0:
• print("3 5")
• if a % 3 == 0 and a % 7 == 0 and a % 5 != 0:
• print("3 7")
• if a % 5 == 0 and a % 7 == 0 and a % 3 !=0:
• print("5 7")
• if a % 3 == 0 and a % 5 == 0 and a % 7 == 0:
• print("3 5 7")
• if a % 3 != 0 and a % 5 != 0 and a % 7 != 0:
• print("n")

各位的题解都这么复杂？ 最简题解（目前）：

#include <stdio.h>
int main() {
    int n;
    scanf("%d", &n);
    bool a = false;

    if (n % 3 == 0) {
        printf("%d ", 3);
        a = true;
    }

    if (n % 5 == 0) {
        printf("%d ", 5);
        a = true;
    }

    if (n % 7 == 0) {
        printf("%d ", 7);
        a = true;
    }

    if (!a)
        printf("n");

}

其中的a用于判断是否无法被任何数输出。

hhh a = int(input()) if a % 3 == 0 and a % 5 != 0 and a % 7 != 0: print("3") if a % 5 == 0 and a % 3 !=0 and a % 7 != 0: print("5") if a % 7 == 0 and a % 3 !=0 and a % 5 != 0: print("7") if a % 3 == 0 and a % 5 == 0 and a % 7 != 0: print("3 5") if a % 3 == 0 and a % 7 == 0 and a % 5 != 0: print("3 7") if a % 5 == 0 and a % 7 == 0 and a % 3 !=0: print("5 7") if a % 3 == 0 and a % 5 == 0 and a % 7 == 0: print("3 5 7") if a % 3 != 0 and a % 5 != 0 and a % 7 != 0: print("n")

a = int(input()) if a % 3 == 0 and a % 5 != 0 and a % 7 != 0: print("3") if a % 5 == 0 and a % 3 !=0 and a % 7 != 0: print("5") if a % 7 == 0 and a % 3 !=0 and a % 5 != 0: print("7") if a % 3 == 0 and a % 5 == 0 and a % 7 != 0: print("3 5") if a % 3 == 0 and a % 7 == 0 and a % 5 != 0: print("3 7") if a % 5 == 0 and a % 7 == 0 and a % 3 !=0: print("5 7") if a % 3 == 0 and a % 5 == 0 and a % 7 == 0: print("3 5 7") if a % 3 != 0 and a % 5 != 0 and a % 7 != 0: print("n")