#include <bits/stdc++.h> #define int long long using namespace std; signed main(){ ios::sync_with_stdio(0); cin.tie(0); int n,k,r,m=LLONG_MAX; cin>>n>>k>>r; int a[n]; int d[k+1]; int re[r][2]; for(int i=0;i<n;i++){ cin>>a[i]; } for(int i=0;i<=k;i++){ d[i]=0; } for(int i=0;i<r;i++){ int b,q; cin>>b>>q; re[i][0]=b; re[i][1]=q; } int l=0,ri=0; d[a[0]]==1; while(l<n&&ri<n){ //check bool allin=1; for(int i=0;i<r;i++){ if(d[re[i][0]]<re[i][1]){ allin=0;break; } } if(allin==1){ m=min(m,ri-l); l++; d[a[l]]--; for(int i=l;i<=ri;i++){ cout<<a[i] <<" "; } } else{ ri++; d[a[min(ri,n-1)]]++; } if(l==ri){ cout<<1; return 0; } } if(m==LLONG_MAX){ cout<<"impossible"; } else{ cout<< m; } }

dna.cpp: In function 'int main()':
dna.cpp:26:12: warning: statement has no effect [-Wunused-value]
   26 |     d[a[0]]==1;
      |     ~~~~~~~^~~