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Number Theory
Maximum User Solved
Minimum User Solved
Difficulty Easy to Hard
Difficulty Hard to Easy
LightOJ ID Ascending
LightOJ ID Descending
Show unsolved only
Mathematically Hard
LOJ-1007
Easy
Solved by: 2840
Success rate: 26.40%
Solve
Iftar Party
LOJ-1014
Medium
Solved by: 2748
Success rate: 31.33%
Solve
Eid
LOJ-1024
Medium
Solved by: 1253
Success rate: 42.12%
Solve
Trailing Zeroes (I)
LOJ-1028
Easy
Solved by: 2218
Success rate: 23.26%
Solve
Intelligent Factorial Factorization
LOJ-1035
Easy
Solved by: 2639
Success rate: 61.88%
Solve
Digits of Factorial
LOJ-1045
Easy
Solved by: 4268
Success rate: 54.90%
Solve
Efficient Pseudo Code
LOJ-1054
Medium
Solved by: 1434
Success rate: 29.58%
Solve
Combinations
LOJ-1067
Medium
Solved by: 2297
Success rate: 39.63%
Solve
How Many Points?
LOJ-1077
Medium
Solved by: 1401
Success rate: 46.46%
Solve
Trailing Zeroes (II)
LOJ-1090
Medium
Solved by: 1517
Success rate: 56.68%
Solve
A New Function
LOJ-1098
Medium
Solved by: 1068
Success rate: 60.42%
Solve
False Ordering
LOJ-1109
Easy
Solved by: 4024
Success rate: 77.62%
Solve
Trailing Zeroes (III)
LOJ-1138
Easy
Solved by: 2707
Success rate: 53.45%
Solve
Bank Robbery
LOJ-1163
Medium
Solved by: 818
Success rate: 52.65%
Solve
Help Hanzo
LOJ-1197
Medium
Solved by: 1126
Success rate: 31.89%
Solve
Fantasy of a Summation
LOJ-1213
Medium
Solved by: 828
Success rate: 63.88%
Solve
Large Division
LOJ-1214
Easy
Solved by: 4218
Success rate: 51.45%
Solve
Finding LCM
LOJ-1215
Medium
Solved by: 1406
Success rate: 38.52%
Solve
Mysterious Bacteria
LOJ-1220
Medium
Solved by: 959
Success rate: 28.16%
Solve
Harmonic Number
LOJ-1234
Medium
Solved by: 1115
Success rate: 45.76%
Solve
Pairs Forming LCM
LOJ-1236
Medium
Solved by: 759
Success rate: 41.43%
Solve
Harmonic Number (II)
LOJ-1245
Medium
Solved by: 839
Success rate: 73.17%
Solve
Goldbach's Conjecture
LOJ-1259
Easy
Solved by: 2005
Success rate: 50.00%
Solve
Sum of Consecutive Integers
LOJ-1278
Medium
Solved by: 700
Success rate: 36.24%
Solve
Leading and Trailing
LOJ-1282
Medium
Solved by: 854
Success rate: 43.48%
Solve
LCM from 1 to n
LOJ-1289
Medium
Solved by: 782
Success rate: 25.29%
Solve
One Theorem, One Year
LOJ-1298
Medium Hard
Solved by: 331
Success rate: 55.72%
Solve
Strange Game
LOJ-1318
Hard
Solved by: 117
Success rate: 37.53%
Solve
Grid Coloring
LOJ-1333
Medium Hard
Solved by: 261
Success rate: 30.36%
Solve
Sigma Function
LOJ-1336
Medium
Solved by: 674
Success rate: 63.65%
Solve
Story of Tomisu Ghost
LOJ-1340
Medium Hard
Solved by: 369
Success rate: 69.48%
Solve
Aladdin and the Flying Carpet
LOJ-1341
Easy
Solved by: 752
Success rate: 28.57%
Solve
Prime Independence
LOJ-1356
Medium Hard
Solved by: 278
Success rate: 28.88%
Solve
Bi-shoe and Phi-shoe
LOJ-1370
Easy
Solved by: 788
Success rate: 42.06%
Solve
LCM Extreme
LOJ-1375
Medium Hard
Solved by: 296
Success rate: 48.16%
Solve
Politeness
LOJ-1399
Hard
Solved by: 37
Success rate: 10.71%
Solve
Repeated Digit Sum
LOJ-1438
Medium Hard
Solved by: 36
Success rate: 21.93%
Solve
Printing Divisors
LOJ-1443
Medium
Solved by: 137
Success rate: 22.14%
Solve
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