1. #include<bits/stdc++.h> using namespace std ; int main ( ) { int n ; cin >> n ; int age ; int group1 = 0 , group2 = 0 , group3 = 0 , group4 = 0 ; for ( int i = 1 ; i <= n ; i ++ ) { cin >> age ; if ( age >= 0 && age <= 18 ) group1 ++ ; else if ( age >= 19 && age <= 35 ) group2 ++ ; else if ( age >= 36 && age <= 60 ) group3 ++ ; else group4 ++ ; } cout << fixed << setprecision(2) << (double) group1 / n * 100 << "%" << endl << (double) group2 / n * 100 << "%" << endl << (double) group3 / n * 100 << "%" << endl << (double) group4 / n * 100 << "%" << endl ; return 0 ; }

#include<iostream>
#include<iomanip>
using namespace std;
int main()
{
    int n,tmp,a1=0,a2=0,a3=0,a4=0;
    cin>>n;
    for(int i=0;i<n;i++)
    {
        cin>>tmp;
        if(tmp<=18)a1+=1;
        else if(19<=tmp&&tmp<=35)a2+=1;
        else if(36<=tmp&&tmp<=60)a3+=1;
        else if(tmp>=61)a4+=1;
    }
    cout<<fixed<<setprecision(2);
    cout<<a1*100.0/n<<'%'<<endl;
    cout<<a2*100.0/n<<'%'<<endl;
    cout<<a3*100.0/n<<'%'<<endl;
    cout<<a4*100.0/n<<'%'<<endl;
    return 0;
}

#include #include using namespace std; int main() { int n,tmp,a1=0,a2=0,a3=0,a4=0; cin>>n; for(int i=0;i<n;i++) { cin>>tmp; if(tmp<=18)a1+=1; else if(19<=tmp&&tmp<=35)a2+=1; else if(36<=tmp&&tmp<=60)a3+=1; else if(tmp>=61)a4+=1; } cout<<fixed<<setprecision(2); cout<<a1100.0/n<<'%'<<endl; cout<<a2100.0/n<<'%'<<endl; cout<<a3100.0/n<<'%'<<endl; cout<<a4100.0/n<<'%'<<endl; return 0; }

#include <bits/stdc++.h> #define maxn 300000 using namespace std; typedef long long ll; int n,a[maxn],h1,h2,h3,h4; double l; int main(){ cin>>n; for(int i=1;i<=n;i++){ cin>>a[i]; if(a[i]<=18) h1++; else if(a[i]<=35) h2++; else if(a[i]<=60) h3++; else h4++; } printf("%.2lf%\n%.2lf%\n%.2lf%\n%.2lf%",h1100.0/n,h2100.0/n,h3100.0/n,h4100.0/n); }</u>**********

#include <bits/stdc++.h>
using namespace std;
int sum[4];
int main(){
    int n;
    cin>>n;
    int age;   
    for(int i=1;i<=n;i++){
        cin>>age;
        if(age<=18) 
            sum[0]++;
        else if(age<=35)
            sum[1]++;
        else if(age<=60)
            sum[2]++;
        else
            sum[3]++;
    }
    
    cout<<fixed<<setprecision(2);
    for(int i=0;i<4;i++)
        cout<<sum[i]*100.0/n<<"%"<<endl;  
    return 0;
}

#include <stdio.h> #include #include <math.h> #include #include<bits/stdc++.h> using namespace std; int main() { int a,b[100]; float c=0,d=0,e=0,f=0; cin>>a; for(int i=1;i<=a;i++){ cin>>b[i]; } for(int i=1;i<=a;i++){ if(0<=b[i]&&b[i]<=18){ c++; }else{ if(b[i]<=35){ d++; }else{ if(b[i]<=60){ e++; }else{ f++; } } } } c=c/a; d=d/a; e=e/a; f=f/a; cout<<fixed<<setprecision(2)<<c100; cout<<"%"<<endl; cout<<fixed<<setprecision(2)<<d100; cout<<"%"<<endl; cout<<fixed<<setprecision(2)<<e100; cout<<"%"<<endl; cout<<fixed<<setprecision(2)<<f100; cout<<"%"; return 0; }

#include #include using namespace std; int main() { double n,tmp,a1=0,a2=0,a3=0,a4=0; cin>>n; for(int i=0;i<n;i++) { cin>>tmp; if(tmp<=18)a1+=1; else if(19<=tmp&&tmp<=35)a2+=1; else if(36<=tmp&&tmp<=60)a3+=1; else if(tmp>=61)a4+=1; } cout<<fixed<<setprecision(2); cout<<a1100.0/n<<'%'<<endl; cout<<a2100.0/n<<'%'<<endl; cout<<a3100.0/n<<'%'<<endl; cout<<a4100.0/n<<'%'<<endl; }

#include <bits/stdc++.h>
#define maxn 300000
using namespace std;
typedef long long ll;
int n,a[maxn],h1,h2,h3,h4;
double l;
int main(){
	cin>>n;
	for(int i=1;i<=n;i++){
		cin>>a[i];
		if(a[i]<=18) h1++;
		else if(a[i]<=35) h2++;
		else if(a[i]<=60) h3++;
		else h4++;
	}
	printf("%.2lf\%\n%.2lf\%\n%.2lf\%\n%.2lf\%",h1*100.0/n,h2*100.0/n,h3*100.0/n,h4*100.0/n);
}

#include <bits/stdc++.h>
using namespace std;
const int N=1e7+10;
const int INF=0x3f3f3f3f;
int a[N],n,z1,z2,z3,z4; 
int main()
{
	cin>>n;
	for(int i=1;i<=n;i++)
	{
		cin>>a[i];
		if(a[i]>=0 && a[i]<=18)
		{
			z1++;
		}
		else if(a[i]>=19 && a[i]<=35)
		{
			z2++;
		}
		else if(a[i]>=36 && a[i]<=60)
		{
			z3++;
		}
		else if(a[i]>=61)
		{
			z4++;
		}
	}
	cout<<fixed<<setprecision(2)<<z1*100.0/n<<"%\n";
	cout<<fixed<<setprecision(2)<<z2*100.0/n<<"%\n";
	cout<<fixed<<setprecision(2)<<z3*100.0/n<<"%\n";
	cout<<fixed<<setprecision(2)<<z4*100.0/n<<"%\n";
	return 0;
}

#include<iostream>
using namespace std;
int n,a,b,c,d;
void out(int x){
	printf("%.2lf",100.0*x/n);
	cout<<"%\n";
}
int main(){
	int x;
	cin>>n;
	for(int i=1;i<=n;i++){
		cin>>x;
		if(0<=x&&x<=18)a++;
		else if(x<=35)b++;
		else if(x<=60)c++;
		else d++;
	}
	out(a);out(b);out(c);out(d);
	return 0;
}

#include <bits/stdc++.h>

using namespace std;

int a[1005];

int main(){

int n,x,ans1 = 0,ans2 = 0,ans3 = 0,ans4 = 0;

cin>>n;

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

cin>>x;

if(0 <= x && x <= 18) ans1++;

else if(x<=35) ans2++;

else if(x<=60) ans3++;

else ans4++;

}

cout<<fixed<<setprecision(2);

cout<<1.0ans1 / n100<<"%"<<endl;

cout<<1.0ans2 / n100<<"%"<<endl;

cout<<1.0ans3 / n100<<"%"<<endl;

cout<<1.0ans4 / n100<<"%"<<endl;

}

#include <bits/stdc++.h>

using namespace std;

//0-18、19-35、36-60、more than 61

int p_q[101];

int main(void)
{
	int n;
	
	cin >> n;
	
	float q0, q19, q36, q61;
	
	
	for (int i = 0; i <= n - 1; i++)
	{
		cin >> p_q[i];
	}
	
	for (int i = 0; i <= n - 1; i++)
	{
		if (p_q[i] <= 18 && p_q >= 0)
		{
			q0++;
		}
		
		if (p_q[i] <= 35 && p_q[i] >= 19)
		{
			q19++;
		}
		
		if (p_q[i] <= 60 && p_q[i] >= 36)
		{
			q36++;
		}
		
		if (p_q[i] >= 61)
		{
			q61++;
		}
	}
	
	printf("%0.2f%\n", q0 / n * 100);
	printf("%0.2f%\n", q19 / n * 100);
	printf("%0.2f%\n", q36 / n * 100);
	printf("%0.2f%%", q61 / n * 100);
	
	return 0;
}