This site is a repository for past problems from the North Central ACM programming contest. For another contest practice site, visit http://acm.uva.es. For the Difficulty rating, 1 is the easiest problem.
| Problem | Judges Input Data | Expected Output | Notes | Difficulty |
| prob1.pdf | data1.txt | out1.txt | notes1.htm | 5 |
| prob2.pdf | data2.txt | out2.txt | notes2.htm | 8 |
| prob3.pdf | data3.txt | out3.txt | notes3.htm | 9 |
| prob4.pdf | data4.txt | out4.txt | notes4.htm | 7 |
| prob5.pdf | data5.txt | out5.txt | notes5.htm | 3 |
| prob6.pdf | data6.txt | out6.txt | notes6.htm | 4 |
| prob7.pdf | data7.txt | out7.txt | notes7.htm | 6 |
| prob8.pdf | data8.txt | out8.txt | notes8.htm | 2 |
| prob9.pdf | data9.txt | out9.txt | notes9.htm | 1 |
| Problem | Judges Input Data | Expected Output | Notes | Difficulty |
| prob1.pdf | data1.txt | out1.txt | notes1.htm | 2 |
| prob2.pdf | data2.txt | out2.txt | notes2.htm | 3 |
| prob3.pdf | data3.txt | out3.txt | notes3.htm | 1 |
| prob4.pdf | data4.txt | out4.txt | notes4.htm | 4 |
| prob5.pdf | data5.txt | out5.txt | notes5.htm | 6 |
| prob6.pdf | data6.txt | out6.txt | notes6.htm | 9 |
| prob7.pdf | data7.txt | out7.txt | notes7.htm | 7 |
| prob8.pdf | data8.txt | out8.txt | notes8.htm | 8 |
| prob9.pdf | data9.txt | out9.txt | notes9.htm | 5 |
| prob10.pdf | data10.txt | out10.txt | notes10.htm | 10 |
| Problem | Judges Input Data | Expected Output | Notes | Difficulty |
| prob1.doc | data1.txt | out1.txt | notes1.htm | 7 |
| prob2.doc | data2.txt | out2.txt | notes2.htm | 6 |
| prob3.doc | data3.txt | out3.txt | notes3.htm | 3 |
| prob4.doc | data4.txt | out4.txt | notes4.htm | 2 |
| prob5.doc | data5.txt | out5.txt | notes5.htm | 5 |
| prob6.doc | data6.txt | out6.txt | notes6.htm | 9 |
| prob7.doc | data7.txt | out7.txt | notes7.htm | 4 |
| prob8.doc | data8.txt | out8.txt | notes8.htm | 8 |
| prob9.doc | data9.txt | out9.txt | notes9.htm | 1 |
| Problem | Judges Input Data | Expected Output | Notes | Difficulty |
| prob1.htm | data1.txt | out1.txt | notes1.htm | 1 |
| prob2.htm | data2.txt | out2.txt | notes2.htm | 5 |
| prob3.htm | data3.txt | out3.txt | notes3.htm | 3 |
| prob4.htm | data4.txt | out4.txt | notes4.htm | 8 |
| prob5.htm | data5.txt | out5.txt | notes5.htm | 6 |
| prob6.htm | data6.txt | out6.txt | notes6.htm | 7 |
| prob7.htm | data7.txt | out7.txt | notes7.htm | 4 |
| prob8.htm | data8.txt | out8.txt | notes8.htm | 2 |
| Problem | Judges Input Data | Expected Output | Notes | Difficulty |
| prob1.doc | data1.txt | out1.txt | notes1.doc | 3 |
| prob2.doc | data2.txt | out2.txt | notes2.doc | 4 |
| prob3.doc | data3.txt | out3.txt | notes3.doc | 8 |
| prob4.doc | data4.txt | out4.txt | notes4.doc | 1 |
| prob5.doc | data5.txt | out5.txt | notes5.doc | 7 |
| prob6.doc | data6.txt | out6.txt | notes6.doc | 9 |
| prob7.doc | data7.txt | out7.txt | notes7.doc | 5 |
| prob8.doc | data8.txt | out8.txt | notes8.doc | 6 |
| prob9.doc | data9.txt | out9.txt | notes9.doc | 2 |
| Problem | Judges Input Data | Expected Output | Notes | Difficulty |
| prob1.doc | prob1.dat | prob1.txt | notes1.doc | |
| prob2.doc | prob2.dat | prob2.txt | notes2.doc | |
| prob3.doc | prob3.dat | prob3.txt | notes3.doc | |
| prob4.doc | prob4.dat | prob4.txt | notes4.doc | |
| prob5.doc | prob5.dat | prob5.txt | notes5.doc | |
| prob6.doc | prob6.dat | prob6.txt | notes6.doc | |
| prob7.doc | prob7.dat | prob7.txt | notes7.doc | |
| prob8.doc | prob8.dat | prob8.txt | notes8.doc | |
| prob9.doc | prob9.dat | prob9.txt | notes9.doc |