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View Compilation Error

0_0_3283111_32128\Main.java:10: 找不到符号
符号: 变量 cin
位置: 类 Main
        int t=cin.nextInt();
              ^
0_0_3283111_32128\Main.java:21: 无法将 java.math.BigInteger 中的 multiply(java.math.BigInteger) 应用于 (int)
            dp[i][j]=s[0].multiply(j);
                         ^
0_0_3283111_32128\Main.java:24: 无法将 java.math.BigInteger 中的 multiply(java.math.BigInteger) 应用于 (int)
        dp[i][j]=dp[i-1][j-1].multiply(j);
                             ^
0_0_3283111_32128\Main.java:29: 找不到符号
符号: 变量 cin
位置: 类 Main
            int n=cin.nextInt();
                  ^
4 错误


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