#include "stdio.h"
#include "stdlib.h"


int main(void) {
  int N = 10000, M=100000;
  float **x = malloc(N*sizeof(float*));
  float *y = malloc(M*sizeof(float*));
  int i,j;
  for (i = 0; i < N; i++) {
    x[i] = malloc(M*sizeof(float));
    for (j = 0; j < M; j++) {
      x[i][j] = (float) j;
    }
  }

  for (i = 0; i < N ; i++) {
    for (j = 0; j < M; j++) {
      y[i] += x[i][j];
    }
  }

  printf("%f\n", y[100]);

  free(x); free(y);

  return 0;
}