0045 - Sum and Average
#include <cstdio> #include <iostream> using namespace std; void Slove(void) { int money, number, count=0, sum=0; double average=0.0; while (scanf ("%d,%d", &money, &number) != EOF) { ++count; sum+=money*number; average+=(double)number; } cout << sum << endl; printf ("%.lf\n", average/count+0.5); } int main(void) { Slove(); return 0; }
Japanese is やるだけ.