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IMPLEMENTATION  Problem 1: Codeforces 835A Problem 2: Codeforces 935B Problem 3: Codeforces 868A Problem 4: Codeforces 868B LOOPS (NOT NESTED) Problem 1: Codeforces 839A Problem 2: Codeforces 939A Problem 3: Codeforces 893A Problem 4: Codeforces 935A Problem 5: Codeforces 961A Problem 6: Codeforces 828A Problem 7: Codeforces 867A Problem 8: Codeforces 939B NESTED LOOPS  Problem 1: Codeforces 894A Problem 2: Codeforces 897A Problem 3: Codeforces 822B Problem 4: Codeforces 828B Problem 5: Codeforces 886A (Can also be solved using sorting) Problem 6: Codeforces 907A Problem 7: Codeforces 22B MATH Problem 1: Codeforces 869B  (Uses a loop) Problem 2: Codeforces 875A  (Uses a nested loop) Problem 3: Codeforces 922B  (Uses a nested loop)

1. Divisibility/Primes/Co-prime/GCD/LCM Problems: 1.  LOJ :   1014 ,  1035 2.  CF :   230B ,  711E ,  585E ,  585C ,  222C ,  546D ,  GYM101212B  , 72A 3.  SPOJ :   LCMSUMH 4.  E-OLYMP :   1146 ,  1243 ,  1147 ,  1229 ,  1244 ,  1230 2. Continued Fraction Problems: 1.  UVA :   834 2.  HackerRank :   euler064 3. Diophantine Equations Problems: 1.  LOJ :   1077 2.  CF :   7C 4. Functions: Counting Divisors/Divisor Sum Problems: 1.  LOJ :   1054 2.  UVA :   13083 5. Function: Totient and Similar Problems: 1.  LOJ :   1007 2.  SPOJ :   NFACTOR  ,  NDIV 6. Modular Arithmetic/CRT Problems: 1.  LOJ :   1067 2.  CF :   687B ,  GYM100825A 7. Discrete Logarithms Problems: 1.  LOJ :   1325 8. Number Systems Problems: 1.  LOJ :   1028 2.  E-OLYMP :   1001 ,  1002 ,  1008 ,  1013 9. Primitive Root Problems: 1.  E-OLYMP :   647