#D9557. Pizza Delivery
Pizza Delivery
Pizza Delivery
Problem F Pizza Delivery
Alyssa is a college student, living in New Tsukuba City. All the streets in the city are one-way. A new social experiment starting tomorrow is on alternative traffic regulation reversing the one-way directions of street sections. Reversals will be on one single street section between two adjacent intersections for each day; the directions of all the other sections will not change, and the reversal will be canceled on the next day.
Alyssa orders a piece of pizza everyday from the same pizzeria. The pizza is delivered along the shortest route from the intersection with the pizzeria to the intersection with Alyssa's house.
Altering the traffic regulation may change the shortest route. Please tell Alyssa how the social experiment will affect the pizza delivery route.
Input
The input consists of a single test case in the following format.
...
The first line contains two integers, , the number of intersections, and , the number of street sections in New Tsukuba City (). The intersections are numbered through and the street sections are numbered through .
The following lines contain the information about the street sections, each with three integers , , and ($1 \leq a_i n, 1 \leq b_i \leq n, a_i \ne b_i, 1 \leq c_i \leq 100 000$). They mean that the street section numbered connects two intersections with the one-way direction from to , which will be reversed on the -th day. The street section has the length of . Note that there may be more than one street section connecting the same pair of intersections.
The pizzeria is on the intersection 1 and Alyssa's house is on the intersection 2. It is guaranteed that at least one route exists from the pizzeria to Alyssa's before the social experiment starts.
Output
The output should contain lines. The -th line should be
- HAPPY if the shortest route on the -th day will become shorter,
- SOSO if the length of the shortest route on the -th day will not change, and
- SAD if the shortest route on the -th day will be longer or if there will be no route from the pizzeria to Alyssa's house.
Alyssa doesn't mind whether the delivery bike can go back to the pizzeria or not.
Sample Input 1
4 5 1 3 5 3 4 6 4 2 7 2 1 18 2 3 12
Sample Output 1
SAD SAD SAD SOSO HAPPY
Sample Input 2
7 5 1 3 2 1 6 3 4 2 4 6 2 5 7 5 6
Sample Output 2
SOSO SAD SOSO SAD SOSO
Sample Input 3
10 14 1 7 9 1 8 3 2 8 4 2 6 11 3 7 8 3 4 4 3 2 1 3 2 7 4 8 4 5 6 11 5 8 12 6 10 6 7 10 8 8 3 6
Sample Output 3
SOSO SAD HAPPY SOSO SOSO SOSO SAD SOSO SOSO SOSO SOSO SOSO SOSO SAD
Example
Input
4 5 1 3 5 3 4 6 4 2 7 2 1 18 2 3 12
Output
SAD SAD SAD SOSO HAPPY
inputFormat
Input
The input consists of a single test case in the following format.
...
The first line contains two integers, , the number of intersections, and , the number of street sections in New Tsukuba City (). The intersections are numbered through and the street sections are numbered through .
The following lines contain the information about the street sections, each with three integers , , and ($1 \leq a_i n, 1 \leq b_i \leq n, a_i \ne b_i, 1 \leq c_i \leq 100 000$). They mean that the street section numbered connects two intersections with the one-way direction from to , which will be reversed on the -th day. The street section has the length of . Note that there may be more than one street section connecting the same pair of intersections.
The pizzeria is on the intersection 1 and Alyssa's house is on the intersection 2. It is guaranteed that at least one route exists from the pizzeria to Alyssa's before the social experiment starts.
outputFormat
Output
The output should contain lines. The -th line should be
- HAPPY if the shortest route on the -th day will become shorter,
- SOSO if the length of the shortest route on the -th day will not change, and
- SAD if the shortest route on the -th day will be longer or if there will be no route from the pizzeria to Alyssa's house.
Alyssa doesn't mind whether the delivery bike can go back to the pizzeria or not.
Sample Input 1
4 5 1 3 5 3 4 6 4 2 7 2 1 18 2 3 12
Sample Output 1
SAD SAD SAD SOSO HAPPY
Sample Input 2
7 5 1 3 2 1 6 3 4 2 4 6 2 5 7 5 6
Sample Output 2
SOSO SAD SOSO SAD SOSO
Sample Input 3
10 14 1 7 9 1 8 3 2 8 4 2 6 11 3 7 8 3 4 4 3 2 1 3 2 7 4 8 4 5 6 11 5 8 12 6 10 6 7 10 8 8 3 6
Sample Output 3
SOSO SAD HAPPY SOSO SOSO SOSO SAD SOSO SOSO SOSO SOSO SOSO SOSO SAD
Example
Input
4 5 1 3 5 3 4 6 4 2 7 2 1 18 2 3 12
Output
SAD SAD SAD SOSO HAPPY
样例
4 5
1 3 5
3 4 6
4 2 7
2 1 18
2 3 12
SAD
SAD
SAD
SOSO
HAPPY
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