```c
#include <bits/stdc++.h>
int a[12];
int main(){
int sum=0;
for(int i=1;i<=12;i++){
scanf("%d",a[i]);
}
for(int i=1;i<=12;i++){
a[i]=300-a[i]+a[i-1];
if(a[i]>=100){
sum+=a[i];
a[i]%=100;
sum-=a[i];
}else if(a[i]<0){
printf("%d",-i);
return 0;
}
}
printf("%d",a[12]+sum*1.2);;
return 0;
}
```
by JNTM114514 @ 2022-08-09 22:27:48
```cpp
#include<stdio.h>
int main(){
int a[12],r=0,i,m=300,n,s=0,j=0;
for(i=0;i<12;i++)scanf("%d",&a[i]);
for(i=1;i<13;i++){
r+=m;
if(r-a[i-1]<0) {
j=1;
printf("-%d",i);
break; }
if(r-a[i-1]>=0){
r-=a[i-1];
if(r>=100){ s+=r/10;r=r%100; }
}
}
if(j==0)
printf("%d",s*120+r);
return 0;
}
```
你按这样改一下试试。
by lanchenhao2010 @ 2022-08-10 15:23:56