Peter And Haunted Garden

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Peter is a gardener. He has planted trees in a row each tree is denoted by character $'T'$. But some empty spaces are left between trees which are denoted by $'_'$. Peter wants to plant new trees in those spaces and he needs your help. You are given a string $S$ representing this garden. Find the position of empty spaces in the given string or print -1 if no empty spaces are present. ### Input -

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solution.cppC++17

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