>>83
#include <stdio.h>

#define EPS (1e-12)
#define LE(x, y) ((x) - (y) < EPS)

double
f(double x)
{
return 3 * x * x + 2 * x + 1;
}

int
main(void)
{
int count = 0;
double x;
for (x = 0.0; LE(x, 1.0); x += 0.01) { if (LE(2.0, f(x)) && LE(f(x), 3.0)) { count++; } }
printf("%d\n", count);
return 0;
}