Cod sursa(job #1212004)
| Utilizator | Data | 23 iulie 2014 17:06:17 | |
|---|---|---|---|
| Problema | 1-sir | Scor | 100 |
| Compilator | cpp | Status | done |
| Runda | Arhiva de probleme | Marime | 0.47 kb |
#include<fstream>
#define MOD 194767;
using namespace std;
int d[2][65540];
inline int abs(int x)
{return x>0?x:-x;}
int main()
{
ifstream f("1-sir.in");
ofstream g("1-sir.out");
int n,S,s;
f>>n>>s;
S=n*(n-1)/2;
if(s>S)
{
g<<"0"<<'\n';
}
d[1][0]=1;
for(int i=2,l=0;i<=n;i++,l=1-l)
for(int j=0;j<=S;j++)
d[l][j]=(d[1-l][j+i-1]+d[1-l][abs(j-i+1)])%MOD;
g<<d[n&1][s];
return 0;
}
