Harshita walks from her school to home. From her school she walks 5km toward the west, then she turns right and walks 4 km, and then again she turns right and walks 10 km, and then again she turns right and walks 8 km, then she turns left and walks 15 km, and last she turn left and walk 4 km to reach home. Where is a school with respect to her home and shortest distance?