Submission #862639

#TimeUsernameProblemLanguageResultExecution timeMemory
862639Ahmed_SolymanKutije (COCI21_kutije)C++14
15 / 70
1100 ms208400 KiB
/* In the name of Allah made by: Ahmed_Solyman */ #include <bits/stdc++.h> #include <ext/rope> using namespace std; using namespace __gnu_cxx; #pragma GCC optimize("-Ofast") #pragma GCC optimize("-O1") //-------------------------------------------------------------// typedef long long ll; typedef unsigned long long ull; #define fast ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0); #define PI acos(-1) #define lb lower_bound #define ub upper_bound #define endl '\n' #define all(v) v.begin(),v.end() #define allr(v) v.rbegin(),v.rend() #define sum_to(n) (n*(n+1))/2 #define pb push_back #define pf push_front #define fil(arr,x) memset(arr,x,sizeof(arr)) const ll mod=1e9+7; int dx[8]={0,1,0,-1,1,1,-1,-1}; int dy[8]={1,0,-1,0,1,-1,-1,1}; //-------------------------------------------------------------// ll lcm(ll a,ll b) { return (max(a,b)/__gcd(a,b))*min(a,b); } void person_bool(bool x) { cout<<(x?"YES":"NO")<<endl; } bool vis[1001]; int main() { //freopen("input.txt","r",stdin); //freopen("output.txt","w",stdout); #ifndef ONLINE_JUDGE //freopen("input.in", "r", stdin); //freopen("output.out", "w", stdout); #endif fast int n,m,q;cin>>n>>m>>q; vector<int>adj[n+5]; for(int i=0;i<m;i++){ for(int j=1;j<=n;j++){ int x;cin>>x; adj[j].push_back(x); } } vector<vector<bool>>can(n+5,vector<bool>(n+5)); for(int i=1;i<=n;i++){ queue<int>q; q.push(i); fil(vis,0); while(q.size()){ int x=q.front(); q.pop(); vis[x]=1; can[i][x]=1; for(auto ch:adj[x]){ if(!vis[ch]){ q.push(ch); } } } } while(q--){ int x,y;cin>>x>>y; cout<<(can[x][y]?"DA":"NE")<<endl; } return 0; }
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