#include <stdio.h>
#include <stdlib.h>
#include <string.h>


void printVec(int *v, int n)
{
     int i;
     for ( i = 0; i<n; i++)
          printf("%.3d ",v[i]);
     printf("\n");
}


int min(int a, int b)
{
     return (a < b) ? a : b;
}

void merge(int *h,int *w, int p, int q, int r, int H, int U) {
	int i = p;
	int j = q + 1;
	
	int *tmp = (int*)malloc((r - p + 1) * sizeof(int));
	int *tmp2 = (int*)malloc((r - p + 1) * sizeof(int));
	int k = 0;
	
	while ((i <= q) && (j <= r)) {
		if (((H-h[i])/U < (H-h[j])/U) || ((H-h[i])/U==(H-h[j])/U && (w[i]>w[j]))){
		     tmp2[k] = w[i];
			tmp[k++] = h[i++];
			} 
		else{
		     tmp2[k] = w[j];
			tmp[k++] = h[j++];
			}
	}
	
	while (i <= q){
	     tmp2[k] = w[i];
		tmp[k++] = h[i++];
	}
	
	while (j <= r){
	     tmp2[k] = w[j];
		tmp[k++] = h[j++];
	}
	
	memcpy(h + p, tmp, (r - p + 1) * sizeof(int));
	memcpy(w + p, tmp2, (r - p + 1) * sizeof(int));
	free(tmp);
	free(tmp2);
}


void mergeSort(int *h, int *w, int p, int r,int H, int U)
{
     if (p<r){
          int q = (p+r)/2;
          mergeSort(h,w,p,q,H,U);
          mergeSort(h,w,q+1,r,H,U);
          merge(h,w,p,q,r,H,U);
     }
}

void merge2(int *h, int p, int q, int r) {
	int i = p;
	int j = q + 1;
	
	int *tmp = (int*)malloc((r - p + 1) * sizeof(int));
	int k = 0;
	
	while ((i <= q) && (j <= r)) {
		if (h[i]>h[j]){
			tmp[k++] = h[i++];
			} 
		else{
			tmp[k++] = h[j++];
			}
	}
	
	while (i <= q){
		tmp[k++] = h[i++];
	}
	
	while (j <= r){
		tmp[k++] = h[j++];
	}
	
	memcpy(h + p, tmp, (r - p + 1) * sizeof(int));
	free(tmp);
}


void mergeSort2(int *h, int p, int r)
{
     if (p<r){
          int q = (p+r)/2;
          mergeSort2(h,p,q);
          mergeSort2(h,q+1,r);
          merge2(h,p,q,r);
     }
}


int main()
{
     int N,H,U;
     FILE *f, *g;
     f = fopen("gutui.in","r");
     g = fopen("gutui.out","w");
     fscanf(f,"%d%d%d",&N,&H,&U);
     int h[N],w[N],hh,ww;
     int i,j;
     int n = 0;
     // adaugam doar gutuile care initial se afla la o inaltime mai mica sau egala cu H
     for ( i = 0; i<N; i++){     
          fscanf(f,"%d %d\n",&hh,&ww);
          if (hh<=H){
               w[n] = ww;
               h[n++] = hh;
          }    
     }
     int aux[n];  
     // sortam in O(n*log(n)) crescator dupa nivel si apoi pentru niveluri egale descrescator dupa greutati   
     mergeSort(h,w,0,n-1,H,U);
     printVec(h,n);
     printVec(w,n);
     printf("\n");
     i = 0;
     int p = 0;
     int nivel;
     while (i<n){
         nivel = (H-h[i])/U;
         j = 0;
         while( i<n && (H-h[i])/U==nivel && j<=nivel){
           aux[p++] = w[i++];
           j++;
        }
        while( i<n && (H-h[i])/U==nivel)
          i++;  
       mergeSort2(aux,0,p-1);
       p = min(nivel+1,p); 
      }
      printf("%d\n",p);        
      printVec(aux,p);
      int Gmax = 0;
     // printf("%d\n",length);
      for ( i = 0; i<p; i++)
               Gmax+=aux[i];
      fprintf(g,"%d\n",Gmax);
      fclose(f);
      fclose(g);
      return 0;
}