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0_0_20708719_10594.cpp
0_0_20708719_10594.cpp(117) : error C2065: “p2”: 未声明的标识符
0_0_20708719_10594.cpp(118) : error C2065: “p2”: 未声明的标识符
0_0_20708719_10594.cpp(118) : error C2228: “.first”的左边必须有类/结构/联合
        类型是“unknown-type”
0_0_20708719_10594.cpp(119) : error C2065: “p2”: 未声明的标识符
0_0_20708719_10594.cpp(119) : error C2228: “.second”的左边必须有类/结构/联合
        类型是“unknown-type”
0_0_20708719_10594.cpp(119) : error C2228: “.first”的左边必须有类/结构/联合
        类型是“unknown-type”
0_0_20708719_10594.cpp(119) : error C2660: “mod_comb”: 函数不接受 2 个参数