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| Problem | Category | Points | AC % | Users | |
|---|---|---|---|---|---|
| Torre, Alfil y Rey | Olimpiada Cubana de Informática | 25p | 19.7% | 95 | |
| Roadblock | PSNIC | 100p | 13.0% | 41 | |
| ¡SOS! Buscando menores | PSNIC | 100p | 0.6% | 2 | |
| Lectura Veloz. | USACO | 100p | 39.7% | 104 | |
| Reading Books. | CSES | 100p | 46.4% | 13 | |
| Lectura Veloz | Olimpiada Cubana de Informática | 100p | 36.3% | 101 | |
| Reconocimiento social | III Copa Nacional | 100p | 8.6% | 19 | |
| Rectángulos. | Uncategorized | 100p | 34.0% | 61 | |
| Rectangle Cutting. | CSES | 100p | 27.4% | 15 | |
| Red Confiable | Uncategorized | 100 | 6.5% | 20 | |
| Redistribución | Uncategorized | 100p | 33.6% | 40 | |
| Field Reduction | USACO | 100p | 31.7% | 18 | |
| Regados | COPA ABEL SANTAMARIA | 100p | 65.7% | 117 | |
| Reiner y Berthlot | USACO | 100p | 11.8% | 46 | |
| Rejilla de desplazamiento | COJ | 100p | 16.2% | 21 | |
| Carrera de Relevos. | USACO | 100p | 23.8% | 13 | |
| Relieve de columnas | COCI | 100p | 8.7% | 4 | |
| Reubicación | USACO | 100p | 29.5% | 24 | |
| Sumas y Restos | Atcoder | 100p | 3.8% | 9 | |
| Papitas fritas | Uncategorized | 100p | 7.4% | 4 | |
| Removal Game. | CSES | 100p | 40.0% | 10 | |
| Removing Digits. | CSES | 100p | 72.1% | 35 | |
| Removing Digits. | CSES | 100p | 77.3% | 43 | |
| Servicio de Renta | Olimpiada Cubana de Informática | 100p | 14.4% | 14 | |
| Reorganizando | PSNIC | 100p | 2.2% | 3 | |
| Repetitions. | CSES | 100p | 42.2% | 71 | |
| Fibonacci series | PSNIC | 100p | 1.5% | 1 | |
| Required Substring. | CSES | 100p | 13.3% | 2 | |
| Restaurant Customers. | CSES | 100p | 46.9% | 26 | |
| Mismos restos. | COCI | 100 | 23.8% | 20 | |
| Expresión de paréntesis. | Uncategorized | 100p | 2.6% | 2 | |
| Reunión de los estudiantes | PSNIC | 100p | 2.3% | 1 | |
| Aplicando Reverso | Olimpiada Cubana de Informática | 100p | 32.8% | 59 | |
| The Great Revegetation. | USACO | 100p | 55.0% | 12 | |
| Redistributing Gifts. | USACO | 100p | 13.6% | 3 | |
| Cruce de río. | USACO | 100p | 32.0% | 9 | |
| Road Construction. | CSES | 100p | 70.6% | 9 | |
| Road Reparation. | CSES | 100p | 66.7% | 10 | |
| Robot desobediente | Codeforces | 100p | 32.0% | 180 | |
| Robots buscadores de agua | CIIC | 100p | 0.0% | 0 | |
| Cabezas de Rosas | Olimpiada Cubana de Informática | 45p | 16.3% | 36 | |
| Números Rounaround | USACO | 100p | 8.5% | 29 | |
| Diseño de Ruta | USACO | 100p | 37.5% | 3 | |
| Shortest Routes I. | CSES | 100p | 23.2% | 40 | |
| Shortest Routes II. | CSES | 100p | 21.5% | 37 | |
| Rectangular Pasture. | USACO | 100p | 40.0% | 4 | |
| El Arado Robot | Olimpiada Cubana de Informática | 100p | 64.2% | 90 | |
| Race. | USACO | 100p | 20.0% | 4 | |
| La Tarea de Rub | Olimpiada Cubana de Informática | 100p | 23.8% | 33 | |
| Corriendo Vueltas | USACO | 100 | 30.4% | 7 |