打印出有向图中的所有环（C++）

[{"title":"（ 20 个子文件 746KB ） 打印出有向图中的所有环（C++）","children":[{"title":"cycle","children":[{"title":"cycle.ncb <span style='color:#111;'> 2.24MB </span>","children":null,"spread":false},{"title":"cycle.suo <span style='color:#111;'> 11.00KB </span>","children":null,"spread":false},{"title":"cycle","children":[{"title":"main.cpp <span style='color:#111;'> 73B </span>","children":null,"spread":false},{"title":"realize.cpp <span style='color:#111;'> 1.67KB </span>","children":null,"spread":false},{"title":"cycle.vcproj.Zhang-PC.Administrator.user <span style='color:#111;'> 1.38KB </span>","children":null,"spread":false},{"title":"graph.h <span style='color:#111;'> 1.39KB </span>","children":null,"spread":false},{"title":"cycle.vcproj <span style='color:#111;'> 3.96KB </span>","children":null,"spread":false},{"title":"Debug","children":[{"title":"cycle.exe.embed.manifest.res <span style='color:#111;'> 728B </span>","children":null,"spread":false},{"title":"cycle.exe.embed.manifest <span style='color:#111;'> 663B </span>","children":null,"spread":false},{"title":"vc90.idb <span style='color:#111;'> 219.00KB </span>","children":null,"spread":false},{"title":"BuildLog.htm <span style='color:#111;'> 7.38KB </span>","children":null,"spread":false},{"title":"mt.dep <span style='color:#111;'> 67B </span>","children":null,"spread":false},{"title":"main.obj <span style='color:#111;'> 80.26KB </span>","children":null,"spread":false},{"title":"cycle.exe.intermediate.manifest <span style='color:#111;'> 621B </span>","children":null,"spread":false},{"title":"vc90.pdb <span style='color:#111;'> 244.00KB </span>","children":null,"spread":false},{"title":"realize.obj <span style='color:#111;'> 228.48KB </span>","children":null,"spread":false}],"spread":true}],"spread":true},{"title":"Debug","children":[{"title":"cycle.ilk <span style='color:#111;'> 1.22MB </span>","children":null,"spread":false},{"title":"cycle.pdb <span style='color:#111;'> 971.00KB </span>","children":null,"spread":false},{"title":"cycle.exe <span style='color:#111;'> 78.50KB </span>","children":null,"spread":false}],"spread":true},{"title":"cycle.sln <span style='color:#111;'> 881B </span>","children":null,"spread":false}],"spread":true}],"spread":true}]