Arvonta

input/code.cpp: In function 'int main()':
input/code.cpp:7:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
    7 |     scanf("%d", &t);
      |     ~~~~~^~~~~~~~~~
input/code.cpp:11:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   11 |         scanf("%d", &n);
      |         ~~~~~^~~~~~~~~~

#include <math.h>
#include <stdio.h>

int main(void)
{
    int t;
    scanf("%d", &t);

    for (int i=0; i<t; i++) {
        int n;
        scanf("%d", &n);
        printf("%.8f\n", 1 - pow((n-1.0)/n, n));
    }
}

Test 1

Group: 1, 2

Verdict: ACCEPTED

Test 2

Group: 2

Verdict: ACCEPTED