#include <stdio.h> int main() { int experiment, behave, process, exam; float total = 0; scanf("%d %d %d %d", &experiment, &behave, &process, &exam);//输入成绩 total = 0.2 * experiment + 0.1 * behave + 0.2 * process + 0.5 * exam;//计算总分 printf("%.1f\n", total);//打印输出 return 0; }