Submission #62583187

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Source Code Expand

#include<bits/stdc++.h>
using namespace std;
#define int long long
#define endl '\n'
typedef pair<int,int>pii;
const int mod = 1e9+7;
int qpow(int a, int b) {
    int res = 1;
    while (b) {
        if (b & 1) res = res * a;
        a = a * a ;
        b >>= 1;
    }
    return res;
}
int mysqrt(int x) {
    int l=0,r=2e9;
    int ans=0;
        while(l<r){
          int mid=(l+r+1)/2;
            if((long long)mid*mid<=x)
                l=mid;
            else r=mid-1;
            }
        return l;
    }
// int C(int n,int x){
//     if(n==0&&x==0)return 1;
//     return M[n]*X[x]%mod*X[n-x]%mod;
// }

const int N=2e3+10;
//int X[100010],M[100010];
int a[N];
//int h[N];
//int dp[N][3];
char g[N][N];
int n,m,q,k,h;
//int d[N];
//int pre[N];
//int cnt[N],w[N];
string s;
//int p[N];
//vector<int>g[N];
//int sz[N];
void solve()
{	
	cin>>n>>m;	
	map<int,int>mp;
	for(int i=1;i<=m;i++) {
		cin>>a[i];
		mp[a[i]]++;
	}
	cout<<n-mp.size()<<endl;
	for(int i = 1;i<=n;i++){
		if(mp[i] == 0) cout<<i<<" ";
	}
	
}
signed main()
{	
    ios::sync_with_stdio(false); cin.tie(0); cout.tie(0);
    //       M[0]=X[0]=1;
	//    for(int i=1;i<=100000;i++){
	//        M[i]=M[i-1]*i%mod;
	//        X[i]=X[i-1]*ksm(i,mod-2)%mod;
	//    } 
//	    int T;
//	    cin>>T;
//		while(T--)
        solve();
    return 0;
}

Submission Info

Compile Error

Main.cpp: In function ‘long long int mysqrt(long long int)’:
Main.cpp:18:9: warning: unused variable ‘ans’ [-Wunused-variable]
   18 |     int ans=0;
      |         ^~~

Judge Result