#include<stdio.h> #include using namespace std; int main() { int x,y; float sum; cin>>x>>y; if(x==0) { sum=2.5x+1.5(y-1); } else sum=2.5*(x-1)+1.5*y; printf("%.1f",sum); }

#include<stdio.h>

#include<iostream>

using namespace std;

int main()

{

int x,y;

float sum;

cin>>x>>y;

//if语句的作用就是怕它测试的数据里x=0或y=0；

if(x==0){

sum=2.5*x+1.5*(y-1);

}

else sum=2.5*(x-1)+1.5*y;

printf("%.1f",sum);

}

#include<stdio.h>

#include

using namespace std;

int main()

{

int x,y;

float sum;

cin>>x>>y;

//if语句的作用就是怕它测试的数据里x=0或y=0；

if(x==0){

sum=2.5x+1.5(y-1);

}

else sum=2.5*(x-1)+1.5*y;

printf("%.1f",sum);

}