#include #include int main() { int i, j, k; printf("Matrix size Elapsed time [sec] \n"); for (int m=1; m<=20; m++) { // Matrix size int n = m*100; // Allocation double **a, **b, **c, *x, *y, *dum; dum = new double[n*n]; a = new double*[n]; for (i=0; i