Task: | Course Schedule |
Sender: | bubu2006 |
Submission time: | 2024-10-03 15:37:11 +0300 |
Language: | C++ (C++20) |
Status: | READY |
Result: | WRONG ANSWER |
test | verdict | time | |
---|---|---|---|
#1 | ACCEPTED | 0.00 s | details |
#2 | ACCEPTED | 0.00 s | details |
#3 | ACCEPTED | 0.00 s | details |
#4 | ACCEPTED | 0.00 s | details |
#5 | ACCEPTED | 0.00 s | details |
#6 | ACCEPTED | 0.09 s | details |
#7 | ACCEPTED | 0.09 s | details |
#8 | ACCEPTED | 0.09 s | details |
#9 | ACCEPTED | 0.09 s | details |
#10 | ACCEPTED | 0.08 s | details |
#11 | ACCEPTED | 0.07 s | details |
#12 | ACCEPTED | 0.00 s | details |
#13 | ACCEPTED | 0.00 s | details |
#14 | ACCEPTED | 0.06 s | details |
#15 | ACCEPTED | 0.06 s | details |
#16 | ACCEPTED | 0.00 s | details |
#17 | WRONG ANSWER | 0.07 s | details |
Compiler report
input/code.cpp: In function 'void topological_sort()': input/code.cpp:52:20: warning: statement has no effect [-Wunused-value] 52 | #define debug(...) 42 | ^~ input/code.cpp:78:5: note: in expansion of macro 'debug' 78 | debug(ans); | ^~~~~ input/code.cpp: In function 'bool check()': input/code.cpp:52:20: warning: statement has no effect [-Wunused-value] 52 | #define debug(...) 42 | ^~ input/code.cpp:87:5: note: in expansion of macro 'debug' 87 | debug(tin); | ^~~~~
Code
#include <bits/stdc++.h>using namespace std;#define sz(x) (int)(x).size()#define all(x) (x).begin(), (x).end()#define int long longstring to_string(string s) {return '"' + s + '"';}string to_string(const char* s) {return to_string((string) s);}string to_string(bool b) {return (b ? "true" : "false");}template <typename A, typename B>string to_string(pair<A, B> p) {return "(" + to_string(p.first) + ", " + to_string(p.second) + ")";}template <typename A>string to_string(A v) {bool first = true;string res = "{";for (const auto &x : v) {if (!first) {res += ", ";}first = false;res += to_string(x);}res += "}";return res;}void debug_out() {cerr << endl;}template <typename Head, typename... Tail>void debug_out(Head H, Tail... T) {cerr << " " << to_string(H);debug_out(T...);}#ifdef LOCAL#define debug(...) cerr << "[" << #__VA_ARGS__ << "]:", debug_out(__VA_ARGS__)#else#define debug(...) 42#endifint n; // number of verticesvector<vector<int>> adj; // adjacency list of graphvector<bool> visited;vector<int> ans;void dfs(int v) {visited[v] = true;for (int u : adj[v]) {if (!visited[u])dfs(u);}ans.push_back(v);}void topological_sort() {visited.assign(n, false);ans.clear();for (int i = 0; i < n; ++i) {if (!visited[i]) {dfs(i);}}reverse(ans.begin(), ans.end());debug(ans);}bool check() {vector<int> tin(n);for (int i = 0; i < n; i++) {tin[ans[i]] = i;}debug(tin);for (int i = 0; i < n; i++) {for (int v : adj[i]) {if (tin[v] < tin[i]) return false;}}return true;}signed main() {cin.tie(0)->sync_with_stdio(0);int m;cin >> n >> m;adj.resize(n);for (int i = 1; i <= m; i++) {int u, v;cin >> u >> v;adj[u - 1].push_back(v - 1);}topological_sort();if (check()) {for (int x : ans) cout << x + 1 << ' ';} else {cout << "IMPOSSIBLE";}}
Test details
Test 1
Verdict: ACCEPTED
input |
---|
10 20 5 2 2 4 8 9 6 4 ... |
correct output |
---|
5 7 10 2 1 8 3 9 6 4 |
user output |
---|
10 7 5 2 1 8 3 9 6 4 |
Test 2
Verdict: ACCEPTED
input |
---|
10 20 2 7 1 10 9 5 9 7 ... |
correct output |
---|
1 8 3 6 10 2 9 4 5 7 |
user output |
---|
8 1 3 6 10 2 9 4 5 7 |
Test 3
Verdict: ACCEPTED
input |
---|
10 20 8 5 2 3 10 1 9 1 ... |
correct output |
---|
4 6 7 9 10 2 8 3 1 5 |
user output |
---|
9 7 10 6 8 4 2 3 1 5 |
Test 4
Verdict: ACCEPTED
input |
---|
10 20 5 10 10 3 9 10 6 2 ... |
correct output |
---|
7 8 6 4 2 1 5 9 10 3 |
user output |
---|
8 7 6 4 2 5 1 9 10 3 |
Test 5
Verdict: ACCEPTED
input |
---|
10 20 2 9 4 8 9 1 10 6 ... |
correct output |
---|
IMPOSSIBLE |
user output |
---|
IMPOSSIBLE |
Test 6
Verdict: ACCEPTED
input |
---|
100000 200000 78359 8853 18190 30703 11401 30087 34627 11535 ... |
correct output |
---|
2 3 8 9 16 18 21 22 27 34 36 4... |
user output |
---|
99998 99996 99994 99993 99992 ... Truncated |
Test 7
Verdict: ACCEPTED
input |
---|
100000 200000 32395 2098 67067 31866 31867 67167 78488 33397 ... |
correct output |
---|
9 11 13 16 22 35 37 38 40 44 5... |
user output |
---|
100000 99994 99991 99986 99983... Truncated |
Test 8
Verdict: ACCEPTED
input |
---|
100000 200000 19035 36947 13730 46121 99449 77790 15626 11731 ... |
correct output |
---|
1 7 15 17 18 34 38 41 48 49 51... |
user output |
---|
100000 99998 99996 99993 99992... Truncated |
Test 9
Verdict: ACCEPTED
input |
---|
100000 200000 14188 9709 46541 20871 32203 88809 99879 54779 ... |
correct output |
---|
6 10 11 16 17 19 21 22 23 28 3... |
user output |
---|
99996 99992 99991 99986 99985 ... Truncated |
Test 10
Verdict: ACCEPTED
input |
---|
100000 200000 41882 61162 28138 18053 74649 74863 69760 74508 ... |
correct output |
---|
IMPOSSIBLE |
user output |
---|
IMPOSSIBLE |
Test 11
Verdict: ACCEPTED
input |
---|
100000 199998 1 100000 1 100000 2 100000 2 100000 ... |
correct output |
---|
1 2 3 4 5 6 7 8 9 10 11 12 13 ... |
user output |
---|
99999 99998 99997 99996 99995 ... Truncated |
Test 12
Verdict: ACCEPTED
input |
---|
2 2 1 2 2 1 |
correct output |
---|
IMPOSSIBLE |
user output |
---|
IMPOSSIBLE |
Test 13
Verdict: ACCEPTED
input |
---|
6 6 1 2 2 3 4 3 4 5 ... |
correct output |
---|
IMPOSSIBLE |
user output |
---|
IMPOSSIBLE |
Test 14
Verdict: ACCEPTED
input |
---|
99999 149997 1 3 3 5 5 7 7 9 ... |
correct output |
---|
1 2 3 4 5 6 7 8 9 10 11 12 13 ... |
user output |
---|
1 2 3 4 5 6 7 8 9 10 11 12 13 ... Truncated |
Test 15
Verdict: ACCEPTED
input |
---|
100000 149998 2 1 3 2 4 3 5 4 ... |
correct output |
---|
100000 99999 99998 99997 99996... |
user output |
---|
100000 99999 99998 99997 99996... Truncated |
Test 16
Verdict: ACCEPTED
input |
---|
6 6 1 2 1 3 2 4 3 5 ... |
correct output |
---|
IMPOSSIBLE |
user output |
---|
IMPOSSIBLE |
Test 17
Verdict: WRONG ANSWER
input |
---|
100000 200000 1 1 1 1 2 2 2 2 ... |
correct output |
---|
IMPOSSIBLE |
user output |
---|
100000 99999 99998 99997 99996... Truncated |