You are given a 0-indexed array of strings garbage where garbage[i] represents the assortment of garbage at the ith house. garbage[i] consists only of the characters 'M', 'P' and 'G' representing one unit of metal, paper and glass garbage respectively. Picking up one unit of any type of garbage takes 1 minute.
You are also given a 0-indexed integer array travel where travel[i] is the number of minutes needed to go from house i to house i + 1.
There are three garbage trucks in the city, each responsible for picking up one type of garbage. Each garbage truck starts at house 0 and must visit each house in order; however, they do not need to visit every house.
Only one garbage truck may be used at any given moment. While one truck is driving or picking up garbage, the other two trucks cannot do anything.
\n\nReturn the minimum number of minutes needed to pick up all the garbage.
\n\n\n
Example 1:
\n\n\nInput: garbage = ["G","P","GP","GG"], travel = [2,4,3]\nOutput: 21\nExplanation:\nThe paper garbage truck:\n1. Travels from house 0 to house 1\n2. Collects the paper garbage at house 1\n3. Travels from house 1 to house 2\n4. Collects the paper garbage at house 2\nAltogether, it takes 8 minutes to pick up all the paper garbage.\nThe glass garbage truck:\n1. Collects the glass garbage at house 0\n2. Travels from house 0 to house 1\n3. Travels from house 1 to house 2\n4. Collects the glass garbage at house 2\n5. Travels from house 2 to house 3\n6. Collects the glass garbage at house 3\nAltogether, it takes 13 minutes to pick up all the glass garbage.\nSince there is no metal garbage, we do not need to consider the metal garbage truck.\nTherefore, it takes a total of 8 + 13 = 21 minutes to collect all the garbage.\n\n\n
Example 2:
\n\n\nInput: garbage = ["MMM","PGM","GP"], travel = [3,10]\nOutput: 37\nExplanation:\nThe metal garbage truck takes 7 minutes to pick up all the metal garbage.\nThe paper garbage truck takes 15 minutes to pick up all the paper garbage.\nThe glass garbage truck takes 15 minutes to pick up all the glass garbage.\nIt takes a total of 7 + 15 + 15 = 37 minutes to collect all the garbage.\n\n\n
\n
Constraints:
\n\n2 <= garbage.length <= 105garbage[i] consists of only the letters 'M', 'P', and 'G'.1 <= garbage[i].length <= 10travel.length == garbage.length - 11 <= travel[i] <= 100Compiled with clang 11 using the latest C++ 20 standard.
Your code is compiled with level two optimization (-O2). AddressSanitizer is also enabled to help detect out-of-bounds and use-after-free bugs.
Most standard library headers are already included automatically for your convenience.
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