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


int main()
{
    int h1,m1,h2,m2,h3,m3,tt1,tt2,tt3;


    scanf("%i %i", &h1, &m1);
    scanf("%i %i", &h2, &m2);
    scanf("%i %i", &h3, &m3);

    tt1=h1*60+m1;
    tt2=h2*60+m2;
    tt3=h3*60+m3;

    if(tt1<=720){printf("v\n");}
    else {printf("f");}

    if(tt2-tt1==192){printf("v\n");}
    else {printf("f");}

   // 24 HORAS
    if(tt3-tt2==1380){printf("v\n");}
    else {printf("f");}

    if((tt1<=720) && (tt2-tt1==192) && (tt3-tt2==1380)){printf("sucesso");}
    else {printf("falha");}








    return 0;
}