#include <stdio.h> typedef struct xl { int x; int y; }xl; int main() { int i,n,x,y,sx=0,sy=0; xl xl1[10]; scanf("%d\n",&n); for(i=0;i<n;i++) { scanf("%d %d\n",&xl1[i].x,&xl1[i].y); sx+=xl1[i].x; sy+=xl1[i...