#include <stdio.h>
#include <time.h>

#define D1 100
#define D2 100
#define D3 1000
#define COLUM "%10.6f"
int arr[D1][D2][D3];

void pwork() {
    int *p = arr[0][0];
    for (int i = 0; i<D1; i++)
        for (int j = 0; j < D2; j++)
            for (int k = 0; k < D3; k++) {
                *p = k;
                p++;
            }
}

void awork() {
    for (int i = 0; i<D1; i++)
        for (int j = 0; j < D2; j++)
            for (int k = 0; k < D3; k++) {
                arr[i][j][k] = k;
            }
}


void t1()
{
    clock_t start, end;
    start = clock();
    for (int i = 0; i < 10; i++)
        pwork();
    end = clock();
    float cpu_time_used = ((float) (end - start)) / CLOCKS_PER_SEC;
    printf(COLUM, cpu_time_used );
}

void t2()
{
    clock_t start, end;
    start = clock();
    for (int i = 0; i < 10; i++)
        awork();
    end = clock();
    float cpu_time_used = ((float) (end - start)) / CLOCKS_PER_SEC;
    printf(COLUM, cpu_time_used );
}

int main(int argc, char const *argv[])
{
    for (int i = 0; i < 10; i++) {
        t1();
        t2();
        printf("\n");
    }
        return 0;
}