Submission #1179564

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Source Code Expand

#include <cstdio>
#include <cmath>

int main()
{
	int X;
	scanf("%d", &X);
	int ans = (int)ceil(sqrt(2 * X + 0.25) - 0.5);
	printf("%d\n", ans);
	return 0;
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:7:17: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d", &X);
                 ^

Judge Result