Chef And Painting

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Chef Yakawaka loves colors and enjoys painting. On a colorful day, Chef takes a ribbon, which consists of n units (they are numbered from 1 to n from left to right). The colorfulness of the i-th unit of the ribbon is 0 at first. Chef likes painting, we know. He takes up a paintbrush with color x and uses it to draw a line on a ribbon. In such a case some contiguous units are painted. Now much to

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solution.cppC++17

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