华为OJ--矩阵相乘

来源：互联网发布：荣威erx5 知乎编辑：程序博客网时间：2024/05/21 12:50

#include<iostream>#include<vector>using namespace std;int main(){int x, y, z;cin >> x >> y >> z;int **m2 = new int*[y];int **m1 = new int*[x];int **m3 = new int*[x];for (int i = 0; i < x; i++){m1[i] = new int[y];}for (int i = 0; i < y; i++){m2[i] = new int[z];}for (int i = 0; i < x; i++){m3[i] = new int[z];}//vector<int>m3;for (int i = 0; i < x; i++){for (int j = 0; j < y; j++){cin >> m1[i][j];}}for (int i = 0; i < y; i++){for (int j = 0; j < z; j++){cin >> m2[i][j];}}for (int i = 0; i < x; i++){for (int j = 0; j < z; j++){m3[i][j] = 0;}}for (int i = 0; i < x; i++){for (int j = 0; j < z; j++){for (int k = 0; k < y; k++){m3[i][j] += m1[i][k] * m2[k][j];}}}for (int i = 0; i<x; i++){for (int j = 0; j<z - 1; j++)cout << m3[i][j] << " ";cout << m3[i][z - 1] << endl;}cout << endl;for (int i = 0; i < x; i++){delete m1[i];}for (int i = 0; i < y; i++){delete m2[i];}for (int i = 0; i < x; i++){delete m3[i];}return 0;}

不知道为什么只得到60分。

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