本文主要是介绍CCFCSP试题编号：202305-2试题名称：矩阵运算，希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！
只要懂如何进行矩阵乘法就好了，和注意一点数的大小范围就ok了！
#include <iostream>
using namespace std;const int N = 10010, D = 30;
long long tmp[D][D], ans[N][N];
int n, d;
int Q[N][D], K[N][D], V[N][D], W[N];
int main()
{cin >> n >> d;for (int i = 1; i <= n; i++)for (int j = 1; j <= d; j++)cin >> Q[i][j];for (int i = 1; i <= n; i++)for (int j = 1; j <= d; j++)cin >> K[i][j];for (int i = 1; i <= n; i++)for (int j = 1; j <= d; j++)cin >> V[i][j];for (int i = 1; i <= n; i++) cin >> W[i];// 计算 K的转置 * V for (int i = 1; i <= d; i++)for (int j = 1; j <= d; j++)for (int k = 1; k <= n; k++)tmp[i][j] += K[k][i] * V[k][j];// 计算 Q * tmp for (int i = 1; i <= n; i++)for (int j = 1; j <= d; j++){for (int k = 1; k <= d; k++)ans[i][j] += Q[i][k] * tmp[k][j];ans[i][j] *= (long long)W[i];}for (int i = 1; i <= n; i++){for (int j = 1; j <= d; j++)cout << ans[i][j] << " ";cout << endl;}system("pause");return 0;
}
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