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| Problem | Category | Points | AC % | Users | |
|---|---|---|---|---|---|
| Maximum Subarray Sum. | CSES | 100p | 28.2% | 57 | |
| Maximum Subarray Sum II. | CSES | 100p | 18.9% | 14 | |
| Maximum Xor Subarray. | CSES | 100p | 29.4% | 4 | |
| Maximum Xor Subset. | CSES | 100p | 26.7% | 4 | |
| Help Maya | DMOJ Rounds | 100 | 5.4% | 2 | |
| Mayor o Igual. | Uncategorized | 100p | 12.9% | 98 | |
| Maze tac toe. | USACO | 100p | 7.7% | 2 | |
| Método del Cangrejo | Entrenamiento Elemental | 100p | 73.6% | 181 | |
| MCD | CIIC | 100p | 15.7% | 19 | |
| MCD | COJ | 100p | 7.1% | 16 | |
| Milk Measurement. | USACO | 100p | 31.4% | 13 | |
| Encima de la Mediana | Olimpiada Cubana de Informática | 100p | 22.4% | 17 | |
| Hora de encuentro. | USACO | 100p | 10.1% | 15 | |
| Meet in the Middle. | CSES | 100p | 52.5% | 15 | |
| Los corredores de MegaBit | PSNIC | 100p | 22.4% | 24 | |
| Mensaje Estable | Santiago de Cuba | 100p | 18.6% | 29 | |
| Lluvia de Meteoros. | USACO | 100p | 22.1% | 44 | |
| MEXeando. | Uncategorized | 100p | 73.3% | 43 | |
| Mex Grid Construction. | CSES | 100p | 82.6% | 17 | |
| Mex Grid Queries. | CSES | 100p | 66.7% | 4 | |
| Mezclando Árboles | III Copa Nacional | 100p | 10.0% | 9 | |
| Conociendo a Miguel | 7mo Entrenamiento para el Preuniversitario en la UCI | 100p | 10.4% | 58 | |
| Mike y la espuma | Uncategorized | 100p | 50.0% | 9 | |
| Mezclando Leche. | USACO | 100p | 78.1% | 9 | |
| Orden de Ordeño | Olimpiada Cubana de Informática | 100p | 9.0% | 11 | |
| Ordeñando en Orden. | USACO | 100p | 29.6% | 7 | |
| Milk Order. | USACO | 100p | 10.8% | 7 | |
| Tiempo Lechero. | USACO | 100p | 40.0% | 12 | |
| Milk Visits. | USACO | 100p | 83.3% | 5 | |
| Mínima Diferencia. | Uncategorized | 100p | 32.1% | 63 | |
| Minimum Euclidean Distance. | CSES | 100p | 17.4% | 4 | |
| Minimal Grid Path. | CSES | 100p | 33.3% | 11 | |
| Minimizing Coins. | CSES | 100p | 41.6% | 66 | |
| Subarreglo MinMax | Entrenamiento Avanzado | 100p | 33.6% | 224 | |
| El número más pequeño | Uncategorized | 100p | 34.5% | 207 | |
| Minimal Rotation. | CSES | 100p | 63.6% | 2 | |
| Minimizar la suma | Copa Regional Central | 100p | 25.3% | 14 | |
| Una celebración matemática | Concurso Provincial VCL | 100p | 33.7% | 175 | |
| Missing Coin Sum. | CSES | 100p | 42.5% | 34 | |
| Missing Coin Sum Queries. | CSES | 100p | 57.1% | 2 | |
| Missing Number. | CSES | 100p | 56.6% | 127 | |
| Vacas Mezcladas. | USACO | 100p | 66.7% | 4 | |
| Haciendo Dinero. | USACO | 100p | 15.8% | 66 | |
| Picas y Fijas. | USACO | 100p | 100.0% | 1 | |
| Notas Musicales. | USACO | 100p | 53.8% | 5 | |
| Teléfonos móviles | IOI | 100 | 45.2% | 11 | |
| Efectivo Vacuno. | USACO | 100p | 47.5% | 57 | |
| Money Sums. | CSES | 100p | 37.6% | 44 | |
| Monster Game I. | CSES | 100p | 100.0% | 1 | |
| Monster Game II. | CSES | 100p | 100.0% | 1 |