More Related Content
More from HCPC: 北海道大学競技プログラミングサークル
More from HCPC: 北海道大学競技プログラミングサークル (20)
グラフを扱おう:最短路問題
- 44. ワーシャルフロイド法
for(int k = 0; k< n; k++)
for(int i = 0; i < n; i++)
for(int j = 0; j < n; j++)
dp[i][j] = min(dp[i][j], dp[i][k] + dp[k][j]);
- 47. コストの更新
1 2 3 4 5
1 0 4 INF 10 INF
2 4 0 5 INF 1
3 INF 5 0 INF INF
4 10 INF INF 0 INF
5 INF 1 INF INF 0
4 2
3 1
5
1
5
10 4
- 48. コストの更新:k = 2
1 2 3 4 5
1 0 4 INF 10 INF
2 INF 0 5 4 1
3 INF 5 0 INF INF
4 10 INF INF 0 INF
5 INF 1 INF INF 0
4 2
3 1
5
1
5
10 4
1 2 3 4 5
1 0 4 INF 10 INF
2 4 0 5 INF 1
3 INF 5 0 INF INF
4 10 INF INF 0 INF
5 INF 1 INF INF 0
- 49. コストの更新:k = 2
1 2 3 4 5
1 0 4 9 10 INF
2 INF 0 5 4 1
3 INF 5 0 INF INF
4 10 INF INF 0 INF
5 INF 1 INF INF 0
4 2
3 1
5
1
5
10 4
1 2 3 4 5
1 0 4 9 10 INF
2 4 0 5 INF 1
3 9 5 0 INF INF
4 10 INF INF 0 INF
5 INF 1 INF INF 0
- 50. コストの更新:k = 2
1 2 3 4 5
1 0 4 9 10 INF
2 INF 0 5 4 1
3 INF 5 0 INF INF
4 10 INF INF 0 INF
5 INF 1 INF INF 0
4 2
3 1
5
1
5
10 4
1 2 3 4 5
1 0 4 9 10 INF
2 4 0 5 INF 1
3 9 5 0 INF INF
4 10 INF INF 0 INF
5 INF 1 INF INF 0
- 51. コストの更新:k = 2
1 2 3 4 5
1 0 4 9 10 5
2 INF 0 5 4 1
3 INF 5 0 INF INF
4 10 INF INF 0 INF
5 INF 1 INF INF 0
4 2
3 1
5
1
5
10 4
1 2 3 4 5
1 0 4 9 10 5
2 4 0 5 INF 1
3 9 5 0 INF INF
4 10 INF INF 0 INF
5 5 1 INF INF 0
- 52. コストの更新:k = 2
1 2 3 4 5
1 0 4 INF 10 INF
2 INF 0 5 4 1
3 INF 5 0 INF INF
4 10 INF INF 0 INF
5 INF 1 INF INF 0
4 2
3 1
5
1
5
10 4
1 2 3 4 5
1 0 4 9 10 5
2 INF 0 5 4 1
3 INF 5 0 INF INF
4 10 INF INF 0 INF
5 INF 1 INF INF 0
1 2 3 4 5
1 0 4 9 10 5
2 4 0 5 INF 1
3 9 5 0 INF INF
4 10 INF INF 0 INF
5 5 1 INF INF 0
- 53. コストの更新:k = 2
1 2 3 4 5
1 0 4 INF 10 INF
2 INF 0 5 4 1
3 INF 5 0 INF INF
4 10 INF INF 0 INF
5 INF 1 INF INF 0
4 2
3 1
5
1
5
10 4
1 2 3 4 5
1 0 4 9 10 5
2 INF 0 5 4 1
3 INF 5 0 INF INF
4 10 INF INF 0 INF
5 INF 1 INF INF 0
1 2 3 4 5
1 0 4 9 10 5
2 INF 0 5 4 1
3 INF 5 0 INF INF
4 10 INF INF 0 INF
5 INF 1 INF INF 0
1 2 3 4 5
1 0 4 9 10 5
2 4 0 5 INF 1
3 9 5 0 INF INF
4 10 INF INF 0 INF
5 5 1 INF INF 0
- 54. コストの更新:k = 2
1 2 3 4 5
1 0 4 INF 10 INF
2 INF 0 5 4 1
3 INF 5 0 INF INF
4 10 INF INF 0 INF
5 INF 1 INF INF 0
4 2
3 1
5
1
5
10 4
1 2 3 4 5
1 0 4 9 10 5
2 INF 0 5 4 1
3 INF 5 0 INF INF
4 10 INF INF 0 INF
5 INF 1 INF INF 0
1 2 3 4 5
1 0 4 9 10 5
2 INF 0 5 4 1
3 INF 5 0 INF INF
4 10 INF INF 0 INF
5 INF 1 INF INF 0
1 2 3 4 5
1 0 4 9 10 5
2 4 0 5 INF 1
3 9 5 0 INF INF
4 10 INF INF 0 INF
5 5 1 INF INF 0
- 55. コストの更新:k = 2
1 2 3 4 5
1 0 4 INF 10 INF
2 INF 0 5 4 1
3 INF 5 0 INF INF
4 10 INF INF 0 INF
5 INF 1 INF INF 0
4 2
3 1
5
1
5
10 4
1 2 3 4 5
1 0 4 9 10 5
2 INF 0 5 4 1
3 INF 5 0 INF INF
4 10 INF INF 0 INF
5 INF 1 INF INF 0
1 2 3 4 5
1 0 4 9 10 5
2 INF 0 5 4 1
3 INF 5 0 INF INF
4 10 INF INF 0 INF
5 INF 1 INF INF 0
1 2 3 4 5
1 0 4 9 10 5
2 4 0 5 INF 1
3 9 5 0 INF INF
4 10 INF INF 0 INF
5 5 1 INF INF 0
- 56. コストの更新:k = 2
1 2 3 4 5
1 0 4 INF 10 INF
2 INF 0 5 4 1
3 INF 5 0 INF INF
4 10 INF INF 0 INF
5 INF 1 INF INF 0
4 2
3 1
5
1
5
10 4
1 2 3 4 5
1 0 4 9 10 5
2 INF 0 5 4 1
3 INF 5 0 INF INF
4 10 INF INF 0 INF
5 INF 1 INF INF 0
1 2 3 4 5
1 0 4 9 10 5
2 INF 0 5 4 1
3 INF 5 0 INF INF
4 10 INF INF 0 INF
5 INF 1 INF INF 0
1 2 3 4 5
1 0 4 9 10 5
2 4 0 5 INF 1
3 9 5 0 INF INF
4 10 INF INF 0 INF
5 5 1 INF INF 0
- 57. コストの更新:k = 2
1 2 3 4 5
1 0 4 INF 10 INF
2 INF 0 5 4 1
3 INF 5 0 INF INF
4 10 INF INF 0 INF
5 INF 1 INF INF 0
4 2
3 1
5
1
5
10 4
1 2 3 4 5
1 0 4 9 10 5
2 INF 0 5 4 1
3 INF 5 0 INF INF
4 10 INF INF 0 INF
5 INF 1 INF INF 0
1 2 3 4 5
1 0 4 9 10 5
2 INF 0 5 4 1
3 INF 5 0 INF INF
4 10 INF INF 0 INF
5 INF 1 INF INF 0
1 2 3 4 5
1 0 4 INF 10 INF
2 4 0 5 INF 1
3 INF 5 0 INF INF
4 10 INF INF 0 INF
5 INF 1 INF INF 0
- 58. コストの更新:k = 2
1 2 3 4 5
1 0 4 INF 10 INF
2 INF 0 5 4 1
3 INF 5 0 INF INF
4 10 INF INF 0 INF
5 INF 1 INF INF 0
4 2
3 1
5
1
5
10 4
1 2 3 4 5
1 0 4 9 10 5
2 INF 0 5 4 1
3 INF 5 0 INF INF
4 10 INF INF 0 INF
5 INF 1 INF INF 0
1 2 3 4 5
1 0 4 9 10 5
2 INF 0 5 4 1
3 INF 5 0 INF INF
4 10 INF INF 0 INF
5 INF 1 INF INF 0
1 2 3 4 5
1 0 4 INF 10 INF
2 4 0 5 INF 1
3 INF 5 0 INF INF
4 10 INF INF 0 INF
5 INF 1 INF INF 0
- 59. コストの更新:k = 2
1 2 3 4 5
1 0 4 INF 10 INF
2 INF 0 5 4 1
3 INF 5 0 INF 6
4 10 INF INF 0 INF
5 INF 1 INF INF 0
4 2
3 1
5
1
5
10 4
1 2 3 4 5
1 0 4 9 10 5
2 INF 0 5 4 1
3 INF 5 0 INF 6
4 10 INF INF 0 INF
5 INF 1 INF INF 0
1 2 3 4 5
1 0 4 INF 10 INF
2 4 0 5 INF 1
3 INF 5 0 INF 6
4 10 INF INF 0 INF
5 INF 1 6 INF 0