Cod sursa(job #1356725)
Utilizator | Raducanu Dragos Ionutzzzzzz | Data | 23 februarie 2015 15:55:41 |
---|---|---|---|
Problema | 1-sir | Scor | 100 |
Compilator | cpp | Status | done |
Runda | Arhiva de probleme | Marime | 0.6 kb |
#include <fstream>
#include <algorithm>
using namespace std;
FILE *f=fopen("1-sir.in","r");
FILE *g=fopen("1-sir.out","w");
int n,s;
int dp[257][32641];
int modul(int x)
{
if( x >= 0 )
return x;
return -x;
}
void solve()
{
dp[1][0] = 1;
for(int i = 2; i <= n; i++)
for(int j = 0; j <= i*(i-1)/2; j++)
dp[i][j] = (dp[i-1][modul(j - (i-1))] + dp[i-1][modul(j + (i-1))])%194767;
fprintf(g,"%d",dp[n][s]);
}
int main()
{
fscanf(f,"%d %d",&n,&s);
solve();
fclose(f);
fclose(g);
return 0;
}