Cut the Negativity

cutthenegativity.py

@@ -0,0 +1,14 @@
+n = int(input())
+
+output = []
+row = 1
+for _ in range(n):
+    costs = map(int, input().split())
+    for col, cost in enumerate(costs, start=1):
+        if cost >= 0:
+            output.append([row, col, cost])
+    row += 1
+print(len(output))
+for m in output:
+    u, v, c = map(str, m)
+    print(" ".join((u, v, c)))