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Cod sursa(job #906181)
#include <stdio.h>
#include <math.h>
using namespace std;
int N, M, R;
void cit ()
{
scanf ("%d%d", &N, &M);
}
void pre ()
{
int ix, iy, xs, delta, nr, sqi;
double sq;
for (ix = 1; ix <= N; ix++)
{
for (iy = 1; iy <= M; iy++)
{
nr = 1;
for (xs = 1; xs < ix; xs++)
{
delta = iy * iy + 4 * xs * (xs - ix);
if (delta <= 0)
{
if (delta == 0)
nr++;
continue;
}
sq = sqrt (delta);
sqi = (int)sq;
if (sq != sqi)
continue;
if (((iy + sqi) & 1) == 0)
nr++;
if (((iy - sqi) & 1) == 0)
nr++;
}
if (ix < N && iy < M)
R += nr * (N - ix) * (M - iy);
/*
if (ix <= M && iy <= N)
R += nr * (M - ix + 1) * (N - iy + 1);
*/
}
}
}
void afi ()
{
printf ("%d", R);
}
int main ()
{
freopen ("dreptunghiuri.in", "r", stdin);
freopen ("dreptunghiuri.out", "w", stdout);
cit ();
pre ();
afi ();
return 0;
}