[SPOJ - OBI] Macaco Prego

#include <stdio.h>
#include <stdlib.h>
#include <math.h>

int main(){

    int n, cont = 1;

    scanf("%d", &n);

    while(n != 0) {

        int atual[4], inter[4], i = 0;
        int ax1, ax2, ay1, ay2, bx1, bx2, by1, by2, sinal = 0;

        for (i = 0; i < n; i++) {

            scanf("%d %d %d %d", &atual[0], &atual[1], &atual[2], &atual[3]);

            if (i == 0) {inter[0] = atual[0];inter[1] = atual[1];inter[2] = atual[2];inter[3] = atual[3];continue;}

            bx1 = atual[0];
            by1 = atual[1];
            bx2 = atual[2];
            by2 = atual[3];

            ax1 = inter[0];
            ay1 = inter[1];
            ax2 = inter[2];
            ay2 = inter[3];

            if (ay1 == by1 && ay2 == by2 && ax1 == bx1 && ax2 == bx2)  {inter[0] = ax1;inter[1] = ay1;inter[2] = ax2;inter[3] = ay2;}
            else if (ay1 > by1 && ay2 > by2 && ax1 > bx1 && ax2 > bx2) {inter[0] = ax1;inter[1] = by1;inter[2] = bx2;inter[3] = ay2;}
            else if (ay1 > by1 && ay2 > by2 && ax1 > bx1 && ax2 < bx2) {inter[0] = ax1;inter[1] = by1;inter[2] = ax2;inter[3] = ay2;}
            else if (ay1 > by1 && ay2 > by2 && ax1 < bx1 && ax2 > bx2) {inter[0] = bx1;inter[1] = by1;inter[2] = bx2;inter[3] = ay2;}
            else if (ay1 > by1 && ay2 > by2 && ax1 < bx1 && ax2 < bx2) {inter[0] = bx1;inter[1] = by1;inter[2] = ax2;inter[3] = ay2;}
            else if (ay1 > by1 && ay2 < by2 && ax1 > bx1 && ax2 > bx2) {inter[0] = ax1;inter[1] = by1;inter[2] = bx2;inter[3] = by2;}
            else if (ay1 > by1 && ay2 < by2 && ax1 > bx1 && ax2 < bx2) {inter[0] = ax1;inter[1] = by1;inter[2] = ax2;inter[3] = by2;}
            else if (ay1 > by1 && ay2 < by2 && ax1 < bx1 && ax2 > bx2) {inter[0] = bx1;inter[1] = by1;inter[2] = bx2;inter[3] = by2;}
            else if (ay1 > by1 && ay2 < by2 && ax1 < bx1 && ax2 < bx2) {inter[0] = bx1;inter[1] = by1;inter[2] = ax2;inter[3] = by2;}
            else if (ay1 < by1 && ay2 > by2 && ax1 > bx1 && ax2 > bx2) {inter[0] = ax1;inter[1] = ay1;inter[2] = bx2;inter[3] = by2;}
            else if (ay1 < by1 && ay2 > by2 && ax1 > bx1 && ax2 < bx2) {inter[0] = ax1;inter[1] = ay1;inter[2] = ax2;inter[3] = by2;}
            else if (ay1 < by1 && ay2 > by2 && ax1 < bx1 && ax2 > bx2) {inter[0] = bx1;inter[1] = ay1;inter[2] = bx2;inter[3] = by2;}
            else if (ay1 < by1 && ay2 > by2 && ax1 < bx1 && ax2 < bx2) {inter[0] = bx1;inter[1] = ay1;inter[2] = ax2;inter[3] = by2;}
            else if (ay1 < by1 && ay2 < by2 && ax1 > bx1 && ax2 > bx2) {inter[0] = ax1;inter[1] = ay1;inter[2] = bx2;inter[3] = ay2;}
            else if (ay1 < by1 && ay2 < by2 && ax1 > bx1 && ax2 < bx2) {inter[0] = ax1;inter[1] = ay1;inter[2] = ax2;inter[3] = ay2;}
            else if (ay1 < by1 && ay2 < by2 && ax1 < bx1 && ax2 > bx2) {inter[0] = bx1;inter[1] = ay1;inter[2] = bx2;inter[3] = ay2;}
            else if (ay1 < by1 && ay2 < by2 && ax1 < bx1 && ax2 < bx2) {inter[0] = bx1;inter[1] = ay1;inter[2] = ax2;inter[3] = ay2;}
            else sinal = 1;
        }

        printf("Teste %d\n", cont); cont++;

        if (sinal == 0 && n > 1)
            printf("%d %d %d %d\n\n", inter[0], inter[1], inter[2], inter[3]);
        else
            printf("nenhum\n\n");

        scanf("%d", &n);

    }

    return 0;
}