 
 #include <builtins.swift>
 #include <io.swift>
+#include <string.swift>
 #include <sys.swift>
 
 main

    }
  }
  printf("final value: %f", A[N-1][N-1]);
}

(float r) f(float a, float b, float c)
{
  r = a + b + c;
}

  printf("WAVEFRONT");
  int N = toint(argv("N"));
  float A[][];

  trace(N);

  A[0][0] = 0;
  foreach i in [1:N-1]
