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Cod sursa(job #217119)
#include<stdio.h>
FILE *f=fopen("cautbin.in","r"),
*g=fopen("cautbin.out","w");
long long i,j,m,n,a[10001],x,k;
int bs(int k)
{ int step;
for(step=1;step<=n;step<<=1);
for(int i=0;step;step>>=1)
if(i+step<=n&&a[i+step]<=k) i+=step;
return i;
}
int main()
{ fscanf(f,"%lld",&n);
for(i=1;i<=n;++i) fscanf(f,"%lld",&a[i]);
fscanf(f,"%lld",&m);
for(i=1;i<=m;++i)
{ fscanf(f,"%lld %lld",&j,&x);
k=bs(x);
if(j==0) { while(a[k]==x) ++k;
if(a[k-1]==x) fprintf(g,"%lld\n",k-1);
else fprintf(g,"-1\n");
}
else if(j==1){ while(a[k]>x) --k;
fprintf(g,"%lld\n",k);
}
else { while(a[k]<x) ++k;
fprintf(g,"%lld\n",k);
}
}
fclose(f);
fclose(g);
return 0;
}