[백준] 15973번 : 두 박스 - C

https://www.acmicpc.net/problem/15973

#include<stdio.h>
#include<string.h>

int check(int v1,int v2,int v3, int v4){
    if(v2<v3 || v4<v1) return 0;
    else if(v2==v3 || v4==v1) return 1;
    return 2;
}

int main() {
    int px1,py1,px2,py2;
    int qx1,qy1,qx2,qy2;
    scanf("%d %d %d %d",&px1,&py1,&px2,&py2);
    scanf("%d %d %d %d",&qx1,&qy1,&qx2,&qy2);
    
    int x=check(px1,px2,qx1,qx2);
    int y=check(py1,py2,qy1,qy2);
        
    if(x==0 || y==0) printf("NULL");
    else if(x==1) printf((y==1)?"POINT":"LINE");
    else printf((y==1)?"LINE":"FACE");
}