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input/code.cpp: In function 'int main()':
input/code.cpp:17:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   17 |             for (int j = 0; j < v1[i].size(); j++) {
      |                             ~~^~~~~~~~~~~~~~

#include <bits/stdc++.h>
using namespace std;

int main() {
    int n, m;
    cin >> n >> m;
    int t1, t2;
    vector<vector<int>> v1(n);
    for (int i = 0; i < m; i++) {
        cin >> t1 >> t2;
        v1[t1].push_back(t2);
    }

    vector<int> ans(5, 1);
    for (int i = 0; i < n; i++) {
        if (!v1[i].empty()) {
            for (int j = 0; j < v1[i].size(); j++) {
                if (ans[v1[i][j]] == 1) {
                    ans[v1[i][j]] = 2; 
                }
                else cout << "IMPOSSIBLE";
            }
        }
    }


    for (int i = 0; i < n; i++) {
        cout << ans[i] << ' ';
    }
}

Test 1

Verdict: WRONG ANSWER

Test 2

Verdict: WRONG ANSWER

Test 3

Verdict: WRONG ANSWER

Test 4

Verdict: WRONG ANSWER

Test 5

Verdict: WRONG ANSWER

Test 6

Verdict: RUNTIME ERROR

Test 7

Verdict: RUNTIME ERROR

Test 8

Verdict: WRONG ANSWER

Test 9

Verdict: WRONG ANSWER

Test 10

Verdict: WRONG ANSWER

Test 11

Verdict: RUNTIME ERROR

Test 12

Verdict: WRONG ANSWER