create dev channel

zeta/py/completed/1149.py

@@ -0,0 +1,12 @@
+N = int(input())
+C = [list(map(int, input().split())) for _ in range(N)]
+
+T = [[0, 0, 0] for i in range(N)]
+T[0] = C[0][:]
+
+for i in range(1, N):
+    T[i][0] = min((T[i - 1][1], T[i - 1][2])) + C[i][0]
+    T[i][1] = min((T[i - 1][0], T[i - 1][2])) + C[i][1]
+    T[i][2] = min((T[i - 1][0], T[i - 1][1])) + C[i][2]
+
+print(min((T[N-1][0], T[N-1][1], T[N-1][2])))