0_0_3151692_11453.cpp:3: error: `main' must return `int'
0_0_3151692_11453.cpp: In function `int main(...)':
0_0_3151692_11453.cpp:4: error: `i' does not name a type
0_0_3151692_11453.cpp:5: error: `sum' undeclared (first use this function)
0_0_3151692_11453.cpp:5: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_3151692_11453.cpp:6: error: `i' undeclared (first use this function)
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