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| Problem | Category | Points | AC % | Users | |
|---|---|---|---|---|---|
| Daisy Chains. | USACO | 100p | 60.0% | 18 | |
| Coin Combinations II. | CSES | 100p | 27.4% | 45 | |
| Formación de Equipos en el Castillo Negro | COPA ABEL SANTAMARIA | 100p | 23.2% | 46 | |
| Exponentiation II. | CSES | 100p | 19.0% | 25 | |
| Two Knights. | CSES | 100p | 67.9% | 35 | |
| Watching Mooloo. | USACO | 100p | 66.7% | 9 | |
| Reordenamiento de la Guardia | COPA ABEL SANTAMARIA | 100p | 10.6% | 17 | |
| Cadena de tres Fibonacci. | Uncategorized | 100p | 36.7% | 31 | |
| Monitoreo de la guardia de la noche | COPA ABEL SANTAMARIA | 100p | 8.4% | 6 | |
| Riego de los Campos | COPA ABEL SANTAMARIA | 100p | 19.3% | 19 | |
| A*B*C | Uncategorized | 100p | 30.4% | 177 | |
| ABC | USACO | 100p | 45.4% | 91 | |
| Land Acquisition | USACO | 100p | 17.8% | 16 | |
| El Acróbata de Circo. | Olimpiada Cubana de Informática | 100p | 26.4% | 94 | |
| Reparando acrósticos | Entrenamiento Elemental | 100p | 53.4% | 167 | |
| Arroz curioso | Uncategorized | 100p | 21.9% | 40 | |
| Adicional | Copa Nacional | 100p | 11.1% | 5 | |
| Adición y Multiplicación. | Olimpiada Cubana de Informática | 100p | 16.0% | 74 | |
| Descubriendo ADN | COCI | 100p | 10.8% | 60 | |
| Advertisement. | CSES | 100p | 20.3% | 30 | |
| Juego AB | Entrenamiento Avanzado | 100p | 10.9% | 34 | |
| Agentes | Polish Olympiad | 100p | 3.9% | 3 | |
| Air Cownditioning II. | USACO | 100p | 44.4% | 7 | |
| Aislador | PSNIC | 100p | 34.4% | 154 | |
| Alex y la Cadena | PSNIC | 100p | 11.2% | 54 | |
| Alex y el Valor Esperado | COJ Round 8 (by dcordb) | 100p | 11.2% | 11 | |
| Alex y la IOI | III Copa Nacional | 100p | 39.4% | 508 | |
| Alex y su árbol | PSNIC | 100p | 10.0% | 24 | |
| Alex y su país | PSNIC | 100p | 9.7% | 19 | |
| Verificando una coartada. | USACO | 100p | 34.2% | 101 | |
| Casi todos los divisores | Uncategorized | 100p | 14.0% | 71 | |
| All Palindromes. | CSES | 100p | 100.0% | 1 | |
| Valor de Amistad. | Olimpiada Cubana de Informática | 100p | 2.5% | 3 | |
| Angry Cows. | USACO | 100p | 14.6% | 5 | |
| Another Game. | CSES | 100p | 36.0% | 8 | |
| Números antiprimos | Polish Olympiad | 100p | 15.2% | 29 | |
| La antena de Etecsa | Uncategorized | 100p | 15.1% | 245 | |
| Antimonotonía | COJ | 100p | 16.2% | 20 | |
| Hormigas en la raíz | PSNIC | 100p | 66.7% | 2 | |
| Apagones | COPA ABEL SANTAMARIA | 100p | 10.4% | 19 | |
| Apartments. | CSES | 100p | 22.0% | 36 | |
| Alex y la casi-permutación | UCLV Selection | 100p | 20.0% | 5 | |
| A Plus B | Super simples | 5p | 36.0% | 1321 | |
| Entrega de Manzanas | USACO | 100p | 30.2% | 117 | |
| Apple Division. | CSES | 100 | 37.3% | 42 | |
| Hormigas en el Árbol | UCLV Selection | 100p | 10.7% | 6 | |
| Polygon Area. | CSES | 100p | 71.4% | 6 | |
| Area of Rectangles. | CSES | 100p | 50.0% | 2 | |
| Aritmética Fácil | Olimpiada Cubana de Informática | 100p | 9.0% | 19 | |
| La progresión armónica | PSNIC | 100p | 11.1% | 17 |