import java.io.*; import java.math.BigDecimal; import java.util.*; public class Main { static long MOD = 2 << 29; public static void main(String[] args) { FastScanner sc = new FastScanner(); int N = sc.nextInt(); int K = sc.nextInt(); int X = sc.nextInt(); int[] A = new int[K]; int[] B = new int[K]; for(int i = 0; i < K; i++) { if(i + 1 == X) { sc.next(); sc.next(); continue; } A[i] = sc.nextInt()-1; B[i] = sc.nextInt()-1; } int[] C = new int[N]; for(int i = 0; i < N; i++) { C[i] = sc.nextInt(); } int[] F = new int[N]; for(int k = 0; k < N; k++) { F[k] = k + 1; } for(int k = 0; k < K; k++) { if(k + 1 == X) { continue; } else { swap(F,A[k],B[k]); } } int IDA = -1; int IDB = -1; for(int k = 0; k < N; k++) { if(C[k] != F[k]) { if(IDA != -1) { IDB = k+1; } else { IDA = k+1; } } } System.out.println(IDA + " " + IDB); } static void swap(int[] A, int b, int c) { int tmp = A[b]; A[b] = A[c]; A[c] = tmp; } } class FastScanner { private final InputStream in = System.in; private final byte[] buffer = new byte[1024]; private int ptr = 0; private int buflen = 0; private boolean hasNextByte() { if (ptr < buflen) { return true; }else{ ptr = 0; try { buflen = in.read(buffer); } catch (IOException e) { e.printStackTrace(); } if (buflen <= 0) { return false; } } return true; } private int readByte() { if (hasNextByte()) return buffer[ptr++]; else return -1;} private boolean isPrintableChar(int c) { return 33 <= c && c <= 126;} private void skipUnprintable() { while(hasNextByte() && !isPrintableChar(buffer[ptr])) ptr++;} public boolean hasNext() { skipUnprintable(); return hasNextByte();} public String next() { if (!hasNext()) throw new NoSuchElementException(); StringBuilder sb = new StringBuilder(); int b = readByte(); while(isPrintableChar(b)) { sb.appendCodePoint(b); b = readByte(); } return sb.toString(); } public long nextLong() { if (!hasNext()) throw new NoSuchElementException(); long n = 0; boolean minus = false; int b = readByte(); if (b == '-') { minus = true; b = readByte(); } if (b < '0' || '9' < b) { throw new NumberFormatException(); } while(true){ if ('0' <= b && b <= '9') { n *= 10; n += b - '0'; }else if(b == -1 || !isPrintableChar(b)){ return minus ? -n : n; }else{ throw new NumberFormatException(); } b = readByte(); } } public int nextInt() { if (!hasNext()) throw new NoSuchElementException(); int n = 0; boolean minus = false; int b = readByte(); if (b == '-') { minus = true; b = readByte(); } if (b < '0' || '9' < b) { throw new NumberFormatException(); } while(true){ if ('0' <= b && b <= '9') { n *= 10; n += b - '0'; }else if(b == -1 || !isPrintableChar(b)){ return minus ? -n : n; }else{ throw new NumberFormatException(); } b = readByte(); } } }