摘要： Ice_cream’s world IIITime Limit: 3000/1000 MS (Java/Others)Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 576Accepted Submission(s): 185Problem Descriptionice_cream’s world becomes stronger and stronger; every road is built as undirected. The queen enjoys traveling around her world; t 阅读全文