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MatrixMul_shortxshort
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//gcc 5.4.0 #include <stdio.h> short a[2][2], b[2][2]; int c[2][2]; int main(void) { int i, j, k=8; int sum; for (i=0;i<2; i++) { for (j=0;j<2;j++){ a[i][j] = i+j+1; } } for (i=0;i<2; i++) { for (j=0;j<2;j++){ b[i][j] = (i+j+1)*k; } } for (i=0;i<2;i++){ for (j=0; j<2; j++){ for (k=0;k<2;k++){ sum = sum + a[i][k] * b[k][j]; } c[i][j] = sum; sum=0; } } printf("Matrix A:\n"); for (i=0;i<2; i++) { for (j=0;j<2;j++){ printf("%d\t",a[i][j]); } printf("\n"); } printf("Matrix B:\n"); for (i=0;i<2; i++) { for (j=0;j<2;j++){ printf("%d\t",b[i][j]); } printf("\n"); } printf("\nAxB:\n"); for (i=0;i<2; i++) { for (j=0;j<2;j++){ printf("%d\t",c[i][j]); } printf("\n"); } return 0; }
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Compilation time: 0.13 sec, absolute running time: 0.08 sec, cpu time: 0.01 sec, memory peak: 3 Mb, absolute service time: 0,22 sec
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Matrix A: 1 2 2 3 Matrix B: 8 16 16 24 AxB: 40 64 64 104