import std.algorithm, std.container, std.conv, std.math, std.range, std.typecons, std.stdio, std.string; auto rdsp(){return readln.splitter;} void pick(R,T)(ref R r,ref T t){t=r.front.to!T;r.popFront;} void readA(T)(size_t n,ref T[]t){t=new T[](n);auto r=rdsp;foreach(ref v;t)pick(r,v);} void readM(T)(size_t r,size_t c,ref T[][]t){t=new T[][](r);foreach(ref v;t)readA(c,v);} void main() { const n = 16; int[][] a; readM(n, n, a); foreach (i; 0..n) foreach (j; i+1..n) a[i][j] = a[j][i] = a[i][j] == 1 ? i : j; auto b = new int[][](3), c = new int[][](1<