0_0_9957355_6893.cpp:3: error: `main' must return `int' 0_0_9957355_6893.cpp: In function `int main(...)': 0_0_9957355_6893.cpp:21: error: expected `}' at end of input 0_0_9957355_6893.cpp:21: error: expected `}' at end of input