Results for: 00191, Intersection
Main parameters
| Parameter | C | C++ | Pascal | Total |
| Number of submissions (AC, WA, or PE) | 1665 | 3171 | 867 | 5703 |
| Number of authors | 448 | 851 | 264 | 1563 |
| First submission correct | 73 | 166 | 41 | 280 |
| Last submission correct | 204 | 426 | 85 | 715 |
| Average number of trials per author | 3.72 | 3.73 | 3.28 | 3.65 |
| Average number of trials per author (excluding submissions after a correct one) | 3.35 | 3.35 | 3.07 | 3.31 |
| Average number of trials to correct submission | 3.47 | 3.5 | 3.38 | 3.47 |
| Number of different equivalence classes | 522 | 890 | 318 | 1562 |
| Number of different score functions | 488 | 813 | 294 | 1428 |
| Number of different equivalence classes in authors' first submissions | 210 | 376 | 140 | 649 |
| Number of different score functions in authors' first submissions | 196 | 349 | 133 | 600 |
Parameters of the C/C++ submissions
| Parameter | All, 1>pfd (N=1284) | Correct (N=246) | 0.1>=pfd>0 (N=385) | 1>pfd>0.1 (N=653) | |||||
| Mean | SD | Mean | SD | Mean | SD | Mean | SD | ||
| FileSize | 1940 | 1240 | 2180 | 833 | 2050 | 1580 | 1780 | 1110 | |
| LOC | 73.6 | 43 | 79.9 | 29.6 | 76.7 | 55.1 | 69.4 | 38.4 | |
| #Comment lines | 4.45 | 8.35 | 5.63 | 7.35 | 4.87 | 10.2 | 3.75 | 7.41 | |
| Halstead, Volume | 3570 | 2200 | 3870 | 1280 | 3790 | 2890 | 3330 | 1960 | |
| McCabe, CC | 17.9 | 10.5 | 19.1 | 7.81 | 18.5 | 13.4 | 17.2 | 9.22 | |
Correlations between parameters of correct C/C++ submissions
| # Comment | Halstead | McCabe | |||||||
| Filesize | LOC | lines | Volume | CC | |||||
| FileSize | 1 | 0.811 | 0.717 | 0.739 | 0.254 | ||||
| LOC | 0.811 | 1 | 0.463 | 0.702 | 0.493 | ||||
| #Comment lines | 0.717 | 0.463 | 1 | 0.381 | 0.0366 | ||||
| Halstead, Volume | 0.739 | 0.702 | 0.381 | 1 | 0.328 | ||||
| McCabe, CC | 0.254 | 0.493 | 0.0366 | 0.328 | 1 | ||||
Correlations between parameters and pfd/defects of C/C++ submissions
| # Comment | Halstead | McCabe | |||||||
| Filesize | LOC | lines | Volume | CC | |||||
| PFD | -0.132 | -0.123 | -0.0984 | -0.111 | -0.126 | ||||
| Defects | -0.108 | -0.0848 | -0.0444 | -0.116 | -0.0571 | ||||
Effect of diversity
 | Average reliability improvement for 0.001<=pfd<=0.01: 31 |
Effect of Language diversity
 | Average reliability improvement for 0.001<=pfd<=0.01 (in the range where all exist): C/C: 13 C/C++: 29.5 C/Pascal: 27.8 |
 | Average reliability improvement for 0.001<=pfd<=0.01 (in the range where all exist): C++/C: 29.5 C++/C++: 34.8 C++/Pascal: 43.4 |
 | Average reliability improvement for 0.001<=pfd<=0.01 (in the range where all exist): Pascal/C: 27.8 Pascal/C++: 43.4 Pascal/Pascal: 13.7 |
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