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by cszmc2004 @ 2017-10-05 18:13:31
我也是欸 为什么呢？？？
by 极电_Mei @ 2018-07-25 20:02:24
## 90分同感
```cpp
#include<bits/stdc++.h>
using namespace std;
int n,s;
int c[10001],y[10001];
int Min,tmp;
int ans=0;
int main()
{
scanf("%d%d",&n,&s);
for(int i=0;i<n;i++)
{
scanf("%d%d",&c[i],&y[i]);
Min=c[i];
for(int j=i-1;j>=0;j--)
{
tmp=s*(i-j)+c[j];
if(tmp<Min) Min=tmp;
}
ans+=y[i]*Min;
}
printf("%d\n",ans);
return 0;
}
```
by 破旧的手枪 @ 2018-10-27 17:13:03
# 好吧 要用long long
by 破旧的手枪 @ 2018-10-27 17:15:22
# long long
by Steven_Green @ 2018-11-23 21:26:57