#include <array>
#include <iostream>
 
constexpr std::size_t kSize = 10;
 
void PrintLine(std::size_t i, char left, char right) {
  std::array<char, kSize * 2 + 1> buffer;
  auto first = buffer.begin();
  auto last = buffer.end() - 2;
  auto pos = first;
  while (pos != first + i) *pos++ = ' ';
  *pos++ = left;
  while (pos != last - i) *pos++ = ' ';
  *pos++ = right;
  *pos++ = '\n';
  std::cout.write(first, pos - first);
}
 
int main() {
  std::size_t i = kSize;
 
  while (i != 0) {
    --i;
    PrintLine(i, '/', '\\');
  }
 
  while (i != kSize) {
    PrintLine(i, '\\', '/');
    ++i;
  }
}

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