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- #include<stdio.h>
- //using namespace std;
- #define ll long long int
- int main()
- {
- int t;
- scanf("%d",&t);
- for(int i=1;i<=t;i++)
- {
- int n;
- scanf("%d",&n);
- ll s[n+2];
- ll f[n+2];
- int c=0;
- for(int j=0;j<n;j++)
- {
- scanf("%lld %lld",&s[j],&f[j]);
- }
- for(int j=0;j<n-1;j++)
- {
- if(s[j]>0&&f[j]>0)
- for(int k=j+1;k<n;k++)
- {
- if(s[k]>s[j]&&f[k]<f[j])
- {
- s[k]=f[k]=0;
- c++;
- }
- else if(s[j]>s[k]&&f[j]<f[k])
- {
- //s[j]=f[j]=0;
- c++;
- break;
- }
- }
- }
- printf("Case %d: %d\n",i,n-c);
- }
- return 0;
- }
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