217119_0_19438.cpp:2:18: iostrem: No such file or directory
217119_0_19438.cpp: In function `int main()':
217119_0_19438.cpp:7: error: `cin' undeclared (first use this function)
217119_0_19438.cpp:7: error: (Each undeclared identifier is reported only once for each function it appears in.)
217119_0_19438.cpp:8:4: invalid suffix "PI" on integer constant
217119_0_19438.cpp:9: error: `cout' undeclared (first use this function)
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