0_0_16546849_5329.cpp: In function 'int main()':
0_0_16546849_5329.cpp:3:25: error: 'scanf' was not declared in this scope
while(scanf("%d", &n)!=EOF) {
^
0_0_16546849_5329.cpp:3:28: error: 'EOF' was not declared in this scope
while(scanf("%d", &n)!=EOF) {
^
0_0_16546849_5329.cpp:6:29: error: 'printf' was not declared in this scope
printf("%d\n\n", sum);
^
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