#include<stdlib.h> #include<stdio.h> #include<iostream.h> #define MAXN 222 int a[MAXN][MAXN],b[MAXN]; int N; int c; void init() { FILE *input; int i,j; if((input=fopen("schedule.in","r"))==NULL) { cout<<"Error in open input file!"<<endl; exit(0); } fscanf(input,"%d",&N); for(i=1;i<=N;i++) for(j=1;j<=N;j++) a[i][j]=0; while(!feof(input)) { fscanf(input,"%d%d",&i,&j); a[i][j]=1; } fclose(input); } void work() { int i,j; int l[MAXN]; bool bo=true; for(i=1;i<=N;i++) b[i]=0; while(bo) { } } void outanswer() { int i,j; cout<<c<<endl; for(i=1;i<=N;i++) for(j=1;j<=N;j++) if(a[i][j]) cout<<i<<" "<<j<<endl; } void main() { init(); work(); outanswer(); }