#include<stdio.h>
int main()
{
int n,x,y,k=1;
scanf("%d",&n);
for(x=1;x<=100;x++){
for(y=1;y<=100;y++){
if((xx+yy==n)&&x<=y){
printf("%d %d\n",x,y);
k=0;
}
}
}
if(k){
printf("No Solution");
}
}
想问问这里的if(k)是什么意思,