题解 | #KiKi算期末成绩#

#include <stdio.h>

int main()
{
    int exper = 0;
    int perfor = 0;
    int pro = 0;
    int exam = 0;

    while (4 == scanf("%d %d %d %d", &exper, &perfor, &pro, &exam))
    {
        printf("%.1f\n", exper * 0.2 + perfor * 0.1 + pro * 0.2 + exam * 0.5);
    }    
    
}