fork download

#include <bits/stdc++.h>
 
 
#pragma GCC optimize("Ofast,fast-math,unroll-loops")
#pragma GCC target("avx2,fma")
using namespace std;
#define ll long long
#define int ll
#define all(a) a.begin(),a.end()
#define allr(a) a.rbegin(),a.rend()
#define pb push_back
#define yes cout<<"YES"
#define no cout<<"NO"
#define endl '\n'
#define endll cout<<endl
#define Fast ios_base::sync_with_stdio(false);cin.tie(nullptr);cout.tie(nullptr);
#define F first
#define S second
#define im cout<<"IMPOSSIBLE"
const int N = 5e5 + 11;
const int NN = 106;
const int mo = 1e9 + 123;
const int mod = 1e9 + 7;
const int m = 1e9 + 123;
const int Mod = 998244353;
const ll inf = 1e18;
const int LOG = 19;
#define PI 3.14159265
 
 
int Lcm(int x, int y) {
    return x / __gcd(x, y) * y;
}
 
vector<int> v[N];
int vis[N];
int dist[N], par[N];
 
void bfs(int node) {
    queue<int> q;
    q.push(node);
    vis[node] = 1;
    while (q.size()) {
        int x = q.front();
        q.pop();
        for (auto i: v[x]) {
            if (vis[i])continue;
            q.push(i);
            vis[i] = 1;
            dist[i] = dist[x] + 1;
            par[i] = x;
        }
    }
}
 
void solve() {
    int n, m;
    cin >> n >> m;
    for (int i = 0; i < m; ++i) {
        int x, y;
        cin >> x >> y;
        v[x].pb(y);
        v[y].pb(x);
    }
    bfs(1);
    if (vis[n]) {
        vector<int> ans;
        int node = n;
        while (node != 1) {
            ans.pb(node);
            node = par[node];
        }
        ans.pb(1);
        cout << dist[n] + 1 << endl;
        reverse(all(ans));
        for (auto i: ans)
            cout << i << " ";
        endll;
    } else cout << "IMPOSSIBLE";
}
 
 
int32_t main() {
    Fast;
#ifndef ONLINE_JUDGE
    freopen("input.txt", "r", stdin);
    freopen("output.txt", "w", stdout);
#endif
    int t = 1;
    //cin >> t;
    for (int i = 1; i < t + 1; ++i) {
        // cout << "Case #" << i << ": ";
        solve();
    }
    return 0;
}

Main.java:1: error: illegal character: '#'
#include <bits/stdc++.h>
^
Main.java:1: error: class, interface, or enum expected
#include <bits/stdc++.h>
         ^
Main.java:4: error: illegal character: '#'
#pragma GCC optimize("Ofast,fast-math,unroll-loops")
^
Main.java:5: error: illegal character: '#'
#pragma GCC target("avx2,fma")
^
Main.java:7: error: illegal character: '#'
#define ll long long
^
Main.java:7: error: class, interface, or enum expected
#define ll long long
        ^
Main.java:8: error: illegal character: '#'
#define int ll
^
Main.java:9: error: illegal character: '#'
#define all(a) a.begin(),a.end()
^
Main.java:10: error: illegal character: '#'
#define allr(a) a.rbegin(),a.rend()
^
Main.java:11: error: illegal character: '#'
#define pb push_back
^
Main.java:12: error: illegal character: '#'
#define yes cout<<"YES"
^
Main.java:13: error: illegal character: '#'
#define no cout<<"NO"
^
Main.java:14: error: illegal character: '#'
#define endl '\n'
^
Main.java:15: error: illegal character: '#'
#define endll cout<<endl
^
Main.java:16: error: illegal character: '#'
#define Fast ios_base::sync_with_stdio(false);cin.tie(nullptr);cout.tie(nullptr);
^
Main.java:16: error: class, interface, or enum expected
#define Fast ios_base::sync_with_stdio(false);cin.tie(nullptr);cout.tie(nullptr);
                                              ^
Main.java:16: error: class, interface, or enum expected
#define Fast ios_base::sync_with_stdio(false);cin.tie(nullptr);cout.tie(nullptr);
                                                               ^
Main.java:17: error: illegal character: '#'
#define F first
^
Main.java:17: error: class, interface, or enum expected
#define F first
        ^
Main.java:18: error: illegal character: '#'
#define S second
^
Main.java:19: error: illegal character: '#'
#define im cout<<"IMPOSSIBLE"
^
Main.java:21: error: class, interface, or enum expected
const int NN = 106;
^
Main.java:22: error: class, interface, or enum expected
const int mo = 1e9 + 123;
^
Main.java:23: error: class, interface, or enum expected
const int mod = 1e9 + 7;
^
Main.java:24: error: class, interface, or enum expected
const int m = 1e9 + 123;
^
Main.java:25: error: class, interface, or enum expected
const int Mod = 998244353;
^
Main.java:26: error: class, interface, or enum expected
const ll inf = 1e18;
^
Main.java:27: error: class, interface, or enum expected
const int LOG = 19;
^
Main.java:28: error: illegal character: '#'
#define PI 3.14159265
^
Main.java:28: error: class, interface, or enum expected
#define PI 3.14159265
        ^
Main.java:33: error: class, interface, or enum expected
}
^
Main.java:36: error: class, interface, or enum expected
int vis[N];
^
Main.java:37: error: class, interface, or enum expected
int dist[N], par[N];
^
Main.java:39: error: class, interface, or enum expected
void bfs(int node) {
^
Main.java:41: error: class, interface, or enum expected
    q.push(node);
    ^
Main.java:42: error: class, interface, or enum expected
    vis[node] = 1;
    ^
Main.java:43: error: class, interface, or enum expected
    while (q.size()) {
    ^
Main.java:45: error: class, interface, or enum expected
        q.pop();
        ^
Main.java:46: error: class, interface, or enum expected
        for (auto i: v[x]) {
        ^
Main.java:48: error: class, interface, or enum expected
            q.push(i);
            ^
Main.java:49: error: class, interface, or enum expected
            vis[i] = 1;
            ^
Main.java:50: error: class, interface, or enum expected
            dist[i] = dist[x] + 1;
            ^
Main.java:51: error: class, interface, or enum expected
            par[i] = x;
            ^
Main.java:52: error: class, interface, or enum expected
        }
        ^
Main.java:58: error: class, interface, or enum expected
    cin >> n >> m;
    ^
Main.java:59: error: class, interface, or enum expected
    for (int i = 0; i < m; ++i) {
    ^
Main.java:59: error: class, interface, or enum expected
    for (int i = 0; i < m; ++i) {
                    ^
Main.java:59: error: class, interface, or enum expected
    for (int i = 0; i < m; ++i) {
                           ^
Main.java:61: error: class, interface, or enum expected
        cin >> x >> y;
        ^
Main.java:62: error: class, interface, or enum expected
        v[x].pb(y);
        ^
Main.java:63: error: class, interface, or enum expected
        v[y].pb(x);
        ^
Main.java:64: error: class, interface, or enum expected
    }
    ^
Main.java:66: error: class, interface, or enum expected
    if (vis[n]) {
    ^
Main.java:68: error: class, interface, or enum expected
        int node = n;
        ^
Main.java:69: error: class, interface, or enum expected
        while (node != 1) {
        ^
Main.java:71: error: class, interface, or enum expected
            node = par[node];
            ^
Main.java:72: error: class, interface, or enum expected
        }
        ^
Main.java:74: error: class, interface, or enum expected
        cout << dist[n] + 1 << endl;
        ^
Main.java:75: error: class, interface, or enum expected
        reverse(all(ans));
        ^
Main.java:76: error: class, interface, or enum expected
        for (auto i: ans)
        ^
Main.java:78: error: class, interface, or enum expected
        endll;
        ^
Main.java:79: error: class, interface, or enum expected
    } else cout << "IMPOSSIBLE";
    ^
Main.java:80: error: class, interface, or enum expected
}
^
Main.java:85: error: illegal character: '#'
#ifndef ONLINE_JUDGE
^
Main.java:85: error: class, interface, or enum expected
#ifndef ONLINE_JUDGE
        ^
Main.java:87: error: class, interface, or enum expected
    freopen("output.txt", "w", stdout);
    ^
Main.java:88: error: illegal character: '#'
#endif
^
Main.java:89: error: class, interface, or enum expected
    int t = 1;
    ^
Main.java:91: error: class, interface, or enum expected
    for (int i = 1; i < t + 1; ++i) {
    ^
Main.java:91: error: class, interface, or enum expected
    for (int i = 1; i < t + 1; ++i) {
                    ^
Main.java:91: error: class, interface, or enum expected
    for (int i = 1; i < t + 1; ++i) {
                               ^
Main.java:94: error: class, interface, or enum expected
    }
    ^
Main.java:96: error: class, interface, or enum expected
}
^
73 errors

Standard output is empty