#include
int main(){
int i;
FILE *fp;
fp=fopen("test.txt","a");
fprintf(fp, "%d %d %d %d\n",100,500,500,500);
for(i=0;i<499;i++){
fprintf(fp,"%d ",100);
}
fprintf(fp,"%d\n",100);
for(i=0;i<500;i++){
fprintf(fp,"%d %d %d\n",i,i+1,20); //length of path from station[i] to station[i+1] are all 20
}
fclose(fp);
return 0;
}