Cod sursa(job #1876681)
Utilizator | Data | 12 februarie 2017 15:40:18 | |
---|---|---|---|
Problema | 1-sir | Scor | 100 |
Compilator | cpp | Status | done |
Runda | Arhiva de probleme | Marime | 0.51 kb |
#include <bits/stdc++.h>
#define nm 40000
#define MOD 194767
using namespace std;
ifstream fin("1-sir.in");
ofstream fout("1-sir.out");
int n,s,d[nm];
int main()
{
int i,j;
fin>>n>>s;
fin.close();
d[0]=1;
if(s<0)
s*=-1;
if(s>n*(n-1)/2)
{
fout<<0;
return 0;
}
for(i=1;i<n;i++)
for(j=i*(i+1)/2;j>=i;j--)
d[j]=(d[j] + d[j-i])%MOD;
fout<<d[(n*(n-1)/2-s)/2]%MOD;
fout.close();
return 0;
}