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import java.util.*;

class SlowTrain

{

public static void main(String args[])

{

Scanner sc= new Scanner(System.in);

double arrivalTime, actualTime, rohitTime;

int testCase;

double waitingTime, min1,min2;

System.out.println("Enter the number of test cases:");

testCase=sc.nextInt();

if(testCase<=10 && testCase>=1)

{

for(int t=1; t<=testCase; t++)

{

System.out.println("Enter the time when Rohit arrives:");

rohitTime=sc.nextDouble();

System.out.println("Enter the time when the train actually arrives:");

actualTime=sc.nextDouble();

System.out.println("Enter the time when the train has to arrive:");

arrivalTime=sc.nextDouble();

if(rohitTime>actualTime)

actualTime=actualTime+12;

min1=rohitTime%1;

min2=actualTime%1;

if(min2<min1)

{

waitingTime=.60-min1+min2;

}

else

{

waitingTime=min2-min1;

}

int time;

time=(int)(waitingTime*100);

System.out.println("Rohit has to wait for "+time+" minutes");

}

}

else

System.out.println("Invalid input");

}

}