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- #include <iostream>
- using namespace std;
- int scal(int A[],int a,int b,int r)
- {
- int n=b-a+1;
- int m=r-b;
- int B[n+2];
- int C[m+2];
- int i,j;
- int z = 0;
- for(j=1;j<=m;j++)
- {
- C[j]=A[b+j];
- }
- for(i=1;i<=n;i++)
- {
- B[i]=A[a+i-1];
- }
- B[n+1]=2147483647;
- C[m+1]=2147483647;
- i=1;
- j=1;
- for(int k=a;k<=r;k++)
- {
- if(B[i]<=C[j])
- {
- A[k]=B[i];
- i++;
- }
- else{
- z+=z+n-i;
- A[k]=C[j];
- j++;
- }
- }
- }
- int sort(int A[],int a,int r)
- {
- int b;
- if(a<r)
- {
- b=(a+r)/2;
- sort(A,a,b);
- sort(A,b+1,r);
- scal(A,a,b,r);
- }
- return 0;
- }
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