Solve problem Ciel and A-B Problem from Codechef

Author: AliOsm

Diff for: CodeChef/Ciel and A-B Problem.cpp

@@ -0,0 +1,25 @@
+#include <bits/stdc++.h>
+
+using namespace std;
+
+string toString(int n) {
+  string tmp = "";
+  while(n) {
+    tmp += (n % 10) + '0';
+    n /= 10;
+  }
+  reverse(tmp.begin(), tmp.end());
+  return tmp;
+}
+
+int main() {
+  int a, b;
+  cin >> a >> b;
+  string c = toString(a - b);
+  if(c[c.length() - 1] == '9')
+    c[c.length() - 1] = '1';
+  else
+    c[c.length() - 1] = '9';
+  cout << c << endl;
+}
+

Diff for: CodeChef/README.md

@@ -1,3 +1,4 @@
 # Problems links
 
+- [Ciel and A-B Problem](https://www.codechef.com/problems/CIELAB)
 - [Compilers and parsers](https://www.codechef.com/problems/COMPILER)