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Hot problems
| Problem | Category | Points | AC % | Users | |
|---|---|---|---|---|---|
| Daisy Chains. | USACO | 100p | 56.6% | 31 | |
| Coin Combinations II. | CSES | 100p | 32.3% | 78 | |
| Formación de Equipos en el Castillo Negro | COPA ABEL SANTAMARIA | 100p | 25.0% | 71 | |
| Exponentiation II. | CSES | 100p | 19.1% | 43 | |
| Two Knights. | CSES | 100p | 59.9% | 67 | |
| Watching Mooloo. | USACO | 100p | 46.3% | 17 | |
| Reordenamiento de la Guardia | COPA ABEL SANTAMARIA | 100p | 11.8% | 25 | |
| Cadena de tres Fibonacci. | Uncategorized | 100p | 37.0% | 35 | |
| Monitoreo de la guardia de la noche | COPA ABEL SANTAMARIA | 100p | 10.9% | 13 | |
| Riego de los Campos | COPA ABEL SANTAMARIA | 100p | 25.5% | 34 | |
| A*B*C. | Uncategorized | 100p | 30.3% | 210 | |
| ABC | USACO | 100p | 46.8% | 137 | |
| Land Acquisition | USACO | 100p | 16.5% | 15 | |
| El Acróbata de Circo. | Olimpiada Cubana de Informática | 100p | 27.4% | 111 | |
| Reparando acrósticos | Entrenamiento Elemental | 100p | 54.8% | 185 | |
| Arroz curioso | Uncategorized | 100p | 21.2% | 39 | |
| Adicional | Copa Nacional | 100p | 13.0% | 6 | |
| Adición y Multiplicación. | Olimpiada Cubana de Informática | 100p | 17.8% | 84 | |
| Descubriendo ADN | COCI | 100p | 12.4% | 73 | |
| Advertisement. | CSES | 100p | 19.7% | 45 | |
| Juego AB | Entrenamiento Avanzado | 100p | 11.8% | 38 | |
| Agentes | Polish Olympiad | 100p | 4.3% | 5 | |
| Air Cownditioning II. | USACO | 100p | 62.5% | 15 | |
| Aislador | PSNIC | 100p | 36.1% | 187 | |
| Alex y la Cadena | PSNIC | 100p | 11.6% | 58 | |
| Alex y el Valor Esperado | COJ Round 8 (by dcordb) | 100p | 11.9% | 12 | |
| Alex y la IOI | III Copa Nacional | 100p | 38.5% | 575 | |
| Alex y su árbol | PSNIC | 100p | 11.1% | 34 | |
| Alex y su país | PSNIC | 100p | 10.2% | 23 | |
| Verificando una coartada. | USACO | 100p | 36.2% | 118 | |
| Casi todos los divisores. | Uncategorized | 100p | 13.3% | 88 | |
| All Palindromes. | CSES | 100p | 25.0% | 2 | |
| Alto Puntaje. | Uncategorized | 100p | 27.0% | 10 | |
| Valor de Amistad. | Olimpiada Cubana de Informática | 100p | 2.2% | 4 | |
| Angry Cows. | USACO | 100p | 14.0% | 7 | |
| Another Game. | CSES | 100p | 36.2% | 17 | |
| Números antiprimos | Polish Olympiad | 100p | 15.0% | 28 | |
| La antena de Etecsa | Uncategorized | 100p | 14.8% | 286 | |
| Antimonotonía | COJ | 100p | 17.1% | 21 | |
| Hormigas en la raíz | PSNIC | 100p | 36.4% | 2 | |
| Apagones | COPA ABEL SANTAMARIA | 100p | 10.0% | 23 | |
| Apartments. | CSES | 100p | 21.1% | 62 | |
| Alex y la casi-permutación | UCLV Selection | 100p | 30.0% | 8 | |
| A Plus B | Super simples | 5p | 36.4% | 1527 | |
| Entrega de Manzanas. | USACO | 100p | 31.1% | 131 | |
| Apples and Bananas. | CSES | 100p | 33.3% | 1 | |
| Apple Division. | CSES | 100 | 39.2% | 65 | |
| Hormigas en el Árbol | UCLV Selection | 100p | 11.1% | 7 | |
| Polygon Area. | CSES | 100p | 53.8% | 15 | |
| Area of Rectangles. | CSES | 100p | 28.6% | 2 |