#include <stdio.h>

int main() {
    int A[3][3] = {{11, 12, 13}, {21, 22, 23}, {31, 32, 33}};
    int B[3][5] = {{11, 12, 13, 14, 15}, {21, 22, 23, 24, 25}, {31, 32, 33, 34, 35}};
    int C[3];
    for (int j = 0; j < 5; ++j) {
        for (int i = 0; i < 3; ++i) {
            C[i] = B[i][j];
        }
        for (int i = 0; i < 3; ++i) {
            B[i][j] = 0;
            for (int k = 0; k < 3; ++k) {
                B[i][j] += A[i][k] * C[k];
            }
        }
    }
    for (int i = 0; i < 3; ++i) {
        for (int j = 0; j < 5; ++j) {
            printf("%d ", B[i][j]);
        }
        printf("\n");
    }
}