Can any one help me?
I got WA#4. But I have no idea where I made a mistake.
I need some tests. I might ignored something important.
Thanks.

Test:
0 +
0 +
2 . 1

------
Answer:
1
2
+

I think you assumed that it starts working from time = 1 s. :)

I've checked this case and still get WA at 4.

Here is the 4th test :
Input :
0 . 16
1 . 10
27 . 35
74 . 22
79 +
107 . 8
147 +
185 +
232 . 21
279 +
325 +
347 +
380 +
407 +
412 . 6
445 . 24
473 . 43
486 . 21
520 . 26
552 +
552 +
565 . 19
583 +
613 . 8
653 . 16
673 . 20
675 . 49
675 . 3
678 . 48
695 . 9
704 . 12
741 +
786 +
809 +
810 . 22
834 +
846 . 35
878 +
921 . 27
946 +
984 . 10
995 . 28
1001 +
1002 +
1012 +
1043 +
1079 +
1107 . 16
1150 +
1180 +
1229 +
1265 +
1279 +
1293 +
1317 . 27
1336 +
1355 +
1361 . 16
1406 +
1438 +
1470 +
1506 +
1527 +
1545 +
1545 +
1567 . 27
1591 +
1626 +
1665 . 2000
1706 +
1755 . 17
1801 +
1829 +
1840 . 44
1843 +
1873 . 42
1909 +
1955 . 14
1989 . 17
2026 +
2072 . 20
2117 . 16
2161 . 7
2177 . 31
2224 . 5
2272 . 10
2276 +
2319 +
2332 +
2376 +
2380 +
2421 +
2457 +
2484 +
2533 . 18
2569 . 34
2585 . 18
2597 +
2598 +
2598 . 12

Correct output :
-
-
-
-
1
-
2
3
-
4
5
6
7
8
+
-
-
-
-
9
10
-
11
+
-
-
-
+
-
+
-
1
2
12
-
13
-
14
-
4
+
-
5
7
6
15
16
+
17
18
8
11
3
19
-
9
1
+
2
12
13
14
20
21
22
-
4
5
-
6
-
7
8
-
10
-
3
+
-
1
+
-
+
-
+
+
2
4
6
9
11
12
8
13
-
-
-
3
14
+

Good luck .

my soln is exactly equal to what u have posted. but failing in test 2. any reason?? please help

Try this test:
0 . 1