Pagini recente » Cod sursa (job #890908) | Cod sursa (job #21154) | Cod sursa (job #440126) | Cod sursa (job #1740470) | Cod sursa (job #1226514)
#include <cstdio>
#include <cmath>
#define SMAX 256 * 256
#define Mod 194767
using namespace std;
int Dp[3][SMAX];
int n, s, Smax;
int main(){
freopen("1-sir.in", "r", stdin);
freopen("1-sir.out", "w", stdout);
scanf("%d %d", &n, &s);
Smax = n * (n - 1) / 2;
if(Smax < s){
printf("0\n");
return 0;
}
Dp[1][0] = 1;
for(int i = 2; i <= n; ++i){
for(int j = 0; j <= Smax; ++j)
Dp[0][j] = (Dp[1][(int)fabs(j - i + 1)] + Dp[1][j + i - 1]) % Mod;
for(int j = 0; j <= Smax; ++j)
Dp[1][j] = Dp[0][j];
}
printf("%d\n", Dp[1][s]);
return 0;
}