Submission #811836

#	Time	Username	Problem	Language	Result	Execution time	Memory
811836		t6twotwo	Newspapers (CEOI21_newspapers)	C++17	Compilation error	0 ms	0 KiB

newspapers

#include <bits/stdc++.h>
using namespace std;
using ll = long long;
#define FFOR(i,a,b,c) for(int i=(a);(c)>0?i<=(b):i>=(b);i+=(c))
#define FOOR(i,a,b) FFOR(i,a,b-1,1)
#define ROOF(i,a,b) FFOR(i,b-1,a,-1)
#define FOR(i,n) FOOR(i,0,n)
#define ROF(i,n) ROOF(i,0,n)
#define FORR(x,v) for(auto &x:v)
#define all(v) (v).begin(),(v).end()
#define lla(v) (v).rbegin(),(v).rend()
#define sz(v) (int)((v).size())
#define vc vector
#define pb push_back
#define ppb pop_back
#define bk back()
#define fr front()
#define pp pop()
#define eb emplace_back
#define lb lower_bound
#define ub upper_bound
#define bg begin()
#define en end()
#define em empty()
#define f first
#define s second
int main() {
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    int N,M;
    cin>>N>>M;
    FOR(i,M){
        int x,y;
        cin>>x>>y;
        x--,y--;
    }
    cout<<"YES\n";
    cout<<2*n-1<<"\n";
    FFOR(i,1,n,1)cout<<i<<" ";
    FFOR(i,2,n,1)cout<<i<<" ";
    return 6/22;
}

Compilation message (stderr)

newspapers.cpp: In function 'int main()':
newspapers.cpp:38:13: error: 'n' was not declared in this scope
   38 |     cout<<2*n-1<<"\n";
      |             ^