#include <stdio.h>
#include <math.h>
 
#define QTD_ELEMENTOS 5
 
int main() {
    int vetor[QTD_ELEMENTOS];
 
    for (int i = 0; i < QTD_ELEMENTOS; i++) {
        //printf("Digite um número: ");
        scanf("%d", &vetor[i]);
    }
 
    int somatorio = 0;
    for (int i = 0; i < QTD_ELEMENTOS; i++) {
        somatorio += vetor[i];
    }
 
    float media = somatorio / (float) QTD_ELEMENTOS;
 
    float variacoes = 0;
    for (int i = 0; i < QTD_ELEMENTOS; i++) {
        float v = vetor[i] - media;
        variacoes += v * v;
    }
 
    float sigma = sqrt(variacoes / QTD_ELEMENTOS);
    printf("Resultado d = %.2f\n", sigma);
}

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