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solve <- function(n) { | |
result <- largeSubtract(largeAdd(sumMultiple(n, 3), sumMultiple(n, 5)), sumMultiple(n, 15)) | |
} | |
right <- function (string, char){ | |
substr(string,nchar(string)-(char-1),nchar(string)) | |
} | |
left <- function (string,char){ | |
substr(string,1,char) | |
} | |
naToZero <- function(a) { | |
if (is.na(a)) return (0) else return (a) | |
} | |
sumMultiple <- function(n, k) { | |
n <- n - (n %% k) | |
left <- n + k | |
right <- n /k | |
if (left %% 2 == 0) left <- left / 2 else right <- right / 2 | |
return (largeMultiple(left, right)) | |
} | |
largeMultiple <- function(a, b) { | |
aL <- as.integer(a / 100000) | |
aS <- a %% 100000 | |
bL <- as.integer(b / 100000) | |
bS <- b %% 100000 | |
# X = (aL + aS) * (bL + bS) | |
# X = aL*bL + aS*bL + bS*aL + aS*bS | |
r <- aS*bS | |
r5 <- aS*bL + bS*aL + as.integer(r/100000) | |
r <- r %% 100000 | |
r10 <- aL*bL + as.integer(r5/100000) | |
r5 <- r5 %% 100000 | |
return (paste0(as.character(r10), as.character(r5), as.character(r))) | |
} | |
largeAdd <- function (a, b) { | |
aL <- naToZero(as.double(left(a, nchar(a) - 10))) | |
aS <- naToZero(as.double(right(a, 10))) | |
bL <- naToZero(as.double(left(b, nchar(b) - 10))) | |
bS <- naToZero(as.double(right(b, 10))) | |
r <- aS + bS | |
r10 <- aL + bL + as.integer(r / 10000000000) | |
r <- r %% 10000000000 | |
if (r10 == 0) | |
return (as.character(r)) | |
else | |
return (paste0(as.character(r10), as.character(r))) | |
} | |
largeSubtract <- function (a, b) { | |
aL <- naToZero(as.double(left(a, nchar(a) - 10))) | |
aS <- naToZero(as.double(right(a, 10))) | |
bL <- naToZero(as.double(left(b, nchar(b) - 10))) | |
bS <- naToZero(as.double(right(b, 10))) | |
if (aS < bS) { | |
r10 <- aL - bL - 1 | |
r <- aS + 10000000000 - bS | |
} | |
else { | |
r10 <- aL - bL | |
r <- aS - bS | |
} | |
if (r10 == 0) | |
return (as.character(r)) | |
else | |
return (paste0(as.character(r10), as.character(r))) | |
} | |
data <- read.table(file("stdin"), header=F, fill=T, sep="\n") | |
T <- as.integer(data$V1[1]) | |
for (i in seq(1:T)) { | |
N <- as.integer(data$V1[i+1]) | |
cat (solve(N-1)) | |
cat('\n') | |
} |
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