Submission #1034468

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Source Code Expand

#include <cstdio>
#include <cmath>

int main() {
  double p;
  long long int n;
  scanf("%lf %lld", &p, &n);
  if (p ==0.0) {
    printf("0\n");
    return 0;
  }
  if (p ==1.0) {
    if (n % 2 ==0) {
      printf("0\n");
    } else {
      printf("1\n");
    }
    return 0;
  }
  printf("%.10f\n", 0.5 * (1 - pow(1 - 2*p, n)));
  return 0;
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:7:28: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
   scanf("%lf %lld", &p, &n);
                            ^

Judge Result