HDU1286 找新朋友

題目鏈接：點擊打開題目 找新朋友 Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 14912    Accepted Submission(s): 7939   Problem Description 新年快到了，「豬頭幫協會」準備搞一個

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