0_0_9538679_25120.cpp: In function `void add(int, int)':
0_0_9538679_25120.cpp:46: error: `dd' undeclared (first use this function)
0_0_9538679_25120.cpp:46: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_9538679_25120.cpp: In function `int dd(int, int)':
0_0_9538679_25120.cpp:50: error: `int dd(int, int)' used prior to declaration
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