Cod sursa(job #201071)
Utilizator | Data | 28 iulie 2008 23:44:36 | |
---|---|---|---|
Problema | Stramosi | Scor | 100 |
Compilator | cpp | Status | done |
Runda | Arhiva de probleme | Marime | 0.54 kb |
#include<stdio.h>
FILE *f,*g;
long c,n,m,i,j,a[19][250001],logg,x,b;
int main()
{ f=fopen("stramosi.in","r"); g=fopen("stramosi.out","w");
fscanf(f,"%ld%ld",&n,&m);
for(i=1;i<=n;i++) fscanf(f,"%ld",&a[0][i]);
i=0;
x=n; while(x>0) { x/=2; logg++; }
while(i<logg)
{ i++;
for(j=1;j<=n;j++) a[i][j]=a[i-1][a[i-1][j]];
}
n=i;
for(i=1;i<=m;i++)
{ fscanf(f,"%ld%ld",&x,&b);
c=0;
while(b)
{ if(b%2) x=a[c][x];
b/=2;
c++;
}
fprintf(g,"%ld\n",x);
}
fclose(g);
return 0;
}