budget = [] #储存每个月的预算 for _ in range(12): budget.append(int(input())) #每个月的预算 savings = 0 #储蓄,有几个100 current=300 #月初共有的钱 saved=0 #每月剩的钱 for i in range(12): if current < budget[i]: print(-(i+1)) break if current-budget[i] >=100: #要存钱 saved = current - budget[i] savings += saved//100 current = saved%100 +300 elif current-budget[i] <100: #不存 saved = current - budget[i] current = saved +300 if i == 11: #如果循环执行完毕，说明没出现钱不够的情况 final_savings = int(savings*100 * 1.2) print(final_savings)