题解 | #KiKi算期末成绩#
知识点：运算
#include <iostream>
using namespace std;
int main() {
int a = 0;
int b = 0;
int c = 0;
int d = 0;
float result = 0;
scanf("%d %d %d %d", &a, &b, &c, &d);
result = a * 0.2 + b * 0.1 + c * 0.2 + d * 0.5;
printf("%.1f", result);
return 0;
}
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