题目链接
题解
读入进来然后直接乘就好了.
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#include<cstdio> #include<cstring> #include<cmath> #include<iostream> #include<algorithm> using namespace std ; template<class T>void read(T &x){ x=0;int f=0;char ch=getchar(); while(ch<'0'||ch>'9'){f|=(ch=='-');ch=getchar();} while(ch<='9'&&ch>='0'){x=(x<<1)+(x<<3)+(ch^48);ch=getchar();} x=f?-x:x; return ; } int a[2000],b[2000],n,sum; int main() { read(n); for(int i=1;i<=n;i++) read(a[i]); for(int i=1;i<=n;i++) read(b[i]); for(int i=1;i<=n;i++) sum+=a[i]*b[i]; printf("%d\n",sum); return 0 ; } |
By:Wahacer
2017.12.28
15:51