This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
#include <iostream>
#include <vector>
using namespace std;
///ifstream cin("info.in");
///ofstream cout("info.out");
#define DIM 1000
bool sel[DIM + 1];
int n, m;
vector <int> G[DIM + 1];
static inline void dfs(int nod) {
sel[nod] = 1;
for(auto e : G[nod])
if(!sel[e])
dfs(e);
}
int main()
{
cin >> n >> m;
for(int i = 1, x, y; i <= m; i++) {
cin >> x >> y;
G[x].push_back(y);
G[y].push_back(x);
}
dfs(1);
int nrcomp = 1;
for(int i = 1; i <= n; i++)
if(!sel[i]) {
sel[i] = 1;
dfs(i);
}
if(nrcomp % 2 == 1)
cout << "NE";
else cout << "DA";
return 0;
}
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