SAT Lines, angles, and triangles Question

A total of 271 toothpicks of equal length were used to construct two types of figures: triangles and squares. The triangles and squares were constructed so that no two figures had a common side. The equation $3x+4y=271$ represents this situation, where $z$ is the number of triangles constructed and $y$ is the number of squares constructed. What is the best interpretation of $(x,y)=(13,58)$ in this context?