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#include <stdio.h>
 
int main(void) {
	int x,y,z=0,w=0;
    for(;~scanf("%d%d",&x,&y);z^=x)w^=y;
    printf("%d,%d",z,w);
	return 0;
}

Success #stdin #stdout 0s 2012KB

stdin

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10 30
45 30
10 65

stdout

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45,65

https://ideone.com/Xv5w1B

language:

C (gcc 8.3)

created:

visibility:

public

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