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@@ -0,0 +1,31 @@
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+input <- as.numeric(readLines("input9.txt"))
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+
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+allplus <- function(vec) {
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+ unlist(lapply(1:(length(vec) - 1), function(i) {
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+ vec[i] + vec[(i + 1):length(vec)]
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+ }))
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+}
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+
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+vvals <- sapply(1:length(input), function(x) {
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+ if (x <= 25) {
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+ return(TRUE)
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+ }
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+ tnum <- input[x]
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+ l25 <- input[(x - 25):(x - 1)]
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+ return(tnum %in% allplus(l25))
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+
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+})
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+
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+inval <- input[!vvals][1]
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+inval
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+
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+alladd <- sapply(1:(length(input) - 1), function(x) {
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+ sapply((x + 1):length(input), function(y) {
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+ sel <- input[x:y]
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+ if (sum(sel) == inval) {
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+ print(sel)
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+ print(min(sel) + max(sel))
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+ }
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+ return(sum(sel))
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+ })
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+})
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