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Cod sursa(job #352352)
#include <fstream>
#define N 262144
using namespace std;
ifstream f ("stramosi.in");
ofstream g ("stramosi.out");
int n, m, p, q;
int main()
{ int v[20][N];
f >> n >> m;
for (int i=1; i<=n; ++i)
f >> v[0][i];
int ok=1, j=0, cv=0;
while (ok)
{ j++;
ok=0;
for (int k=1; k<=n; k++)
if (v[j-1][k])
{ cv=v[j-1][v[j-1][k]];
if (cv) { ok=1; v[j][k]=cv; }
}
}
for (;m;--m)
{ f >> q >> p;
g << v[q][p] << "\n";
}
f.close();
g.close();
return 0;
}