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Cod sursa(job #221418)
#include <cstdio>
#include <cmath>
const int N = 256;
const int S = N*(N+1)/2;
const int MOD = 194767;
int n,s, sn;
int d[2][S+1];
int main() {
freopen("1-sir.in","rt",stdin);
freopen("1-sir.out","wt",stdout);
scanf("%d %d",&n,&s);
d[1][0] = 1;
sn = n*(n+1)/2;
if (fabs((double)s) > sn) {
printf("0\n");
return 0;
}
for (int i = 2, cur = 0; i <= n; ++i) {
for (int j = 0; j <= sn; ++j) {
d[cur][(int)fabs((double)j)] = (d[1-cur][(int)fabs((double)j-(i-1))] + d[1-cur][(int)fabs((double)j+(i-1))]) % MOD;
}
cur = 1-cur;
}
printf("%d\n",d[n%2][(int)fabs((double)s)]);
return 0;
}