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- #include<bits/stdc++.h>
- using namespace std;
- int main()
- {
- int t;
- scanf("%d", &t);
- while(t--)
- {
- int a, b;
- scanf("%d %d", &a, &b);
- if(a == b)
- {
- printf("0\n");
- }
- else if(a > b)
- {
- if((a - b) % 2 == 0) printf("1\n");
- else printf("2\n");
- }
- else
- {
- if((b - a) % 2 == 0) printf("2\n");
- else printf("1\n");
- }
- }
- }
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