CSES - HIIT Open 2018 - Results
Submission details
Task:Data Packet Routing
Sender:Ukkonen Fan Club
Submission time:2018-05-26 11:41:23
Language:C++
Status:READY
Result:ACCEPTED
Test results
testverdicttime
#1ACCEPTED0.01 sdetails
#2ACCEPTED0.22 sdetails
#3ACCEPTED0.30 sdetails
#4ACCEPTED0.22 sdetails
#5ACCEPTED0.05 sdetails
#6ACCEPTED0.03 sdetails
#7ACCEPTED0.01 sdetails
#8ACCEPTED0.01 sdetails
#9ACCEPTED0.01 sdetails

Compiler report

input/code.cpp: In function 'int main()':
input/code.cpp:25:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for (int i = 0; i < adds.size(); ++i) {
                   ~~^~~~~~~~~~~~~

Code

#include <iostream>
#include <vector>

const int N = 1000;
bool used[N][N];

int main() {
	std::ios_base::sync_with_stdio(false);
	std::cin.tie(0);
	int t;
	std::cin >> t;
	for (int cs = 0; cs < t; ++cs) {
		int n, m;
		std::cin >> n >> m;
		int ans = 1;
		std::vector<std::pair<int, int>> adds;
		for (int i = 0; i < m; ++i) {
			int a, b;
			std::cin >> a >> b;
			if (used[a][b]) ans = 2;
			used[a][b] = true;
			adds.push_back({a, b});
		}
		std::cout << ans << '\n';
		for (int i = 0; i < adds.size(); ++i) {
			used[adds[i].first][adds[i].second] = false;
		}
	}
}

Test details

Test 1

Verdict: ACCEPTED

input
2
10 3
1 2
2 1
3 4
...

correct output
1
2

user output
1
2

Test 2

Verdict: ACCEPTED

input
10
400 100000
292 392
33 131
61 254
...

correct output
2
2
2
2
2
...

user output
2
2
2
2
2
...

Test 3

Verdict: ACCEPTED

input
10
700 100000
603 318
570 280
374 589
...

correct output
2
2
2
2
2
...

user output
2
2
2
2
2
...

Test 4

Verdict: ACCEPTED

input
10
1000 100000
612 150
630 797
925 44
...

correct output
2
2
2
2
2
...

user output
2
2
2
2
2
...

Test 5

Verdict: ACCEPTED

input
10
1000 10000
25 713
450 653
659 325
...

correct output
2
2
2
2
2
...

user output
2
2
2
2
2
...

Test 6

Verdict: ACCEPTED

input
10
1000 3000
804 754
634 483
331 476
...

correct output
2
2
2
2
2
...

user output
2
2
2
2
2
...

Test 7

Verdict: ACCEPTED

input
10
1000 1000
529 538
501 784
783 645
...

correct output
2
2
2
2
2
...

user output
2
2
2
2
2
...

Test 8

Verdict: ACCEPTED

input
10
1000 300
602 710
622 952
254 471
...

correct output
1
2
2
1
1
...

user output
1
2
2
1
1
...

Test 9

Verdict: ACCEPTED

input
10
1000 100
295 836
509 67
436 838
...

correct output
1
1
1
1
1
...

user output
1
1
1
1
1
...