Source Code
#include <stdio.h>
#include <string.h>
#include <math.h>
#include <stdlib.h>
int main() {
int n;
int a,b;
scanf("%d",&n);
for(int i=0;i<=n;i++)
{
scanf("%d %d",&a,&b);
}
int c=(n-4)/2;
printf("%d",c);
return 0;
}
Source Code
#include <stdio.h>
#include <string.h>
#include <math.h>
#include <stdlib.h>
int main() {
int n;
int a,b;
scanf("%d",&n);
for(int i=0;i<=n;i++)
{
scanf("%d %d",&a,&b);
}
int c=(n-4)/2;
printf("%d",c);
return 0;
}
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