// #pragma GCC optimize("O3,unroll-loops,Ofast")
// #pragma GCC target("avx2,bmi,bmi2,popcnt,lzcnt")
#include <bits/stdc++.h>
using namespace std;
const short N = 1000+2;
struct DSU {
short e[N];
DSU(){for(short i = 1; i < N-1; i++) e[i]=-1;}
short get(short x) { return e[x] < 0 ? x : e[x] = get(e[x]); }
bool sameSet(short a, short b) { return get(a) == get(b); }
short size(short x) { return -e[get(x)]; }
bool unite(short x, short y) { // union by size
x = get(x), y = get(y); if (x == y) return 0;
if (e[x] > e[y]) swap(x,y);
e[x] += e[y]; e[y] = x; return 1;
}
};
DSU t;
short n,m,a,b;
int q;
int32_t main(){
ios_base::sync_with_stdio(0); cin.tie(0);
cin>>n>>m>>q;
for(short i=1;i<=m;i++){
for(short j=1;j<=n;j++){
cin>>a;
t.unite(j,a);
}
}
while(q--){
cin>>a>>b;
if(t.sameSet(a,b)) cout<<"DA\n";
else cout<<"NE\n";
}
}
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
51 ms |
1864 KB |
Output is correct |
| 2 |
Correct |
43 ms |
1708 KB |
Output is correct |
| 3 |
Correct |
43 ms |
1608 KB |
Output is correct |
| 4 |
Correct |
51 ms |
1880 KB |
Output is correct |
| 5 |
Correct |
56 ms |
1720 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
1 ms |
336 KB |
Output is correct |
| 2 |
Correct |
1 ms |
336 KB |
Output is correct |
| 3 |
Correct |
2 ms |
336 KB |
Output is correct |
| 4 |
Correct |
1 ms |
336 KB |
Output is correct |
| 5 |
Correct |
1 ms |
336 KB |
Output is correct |
| 6 |
Correct |
2 ms |
336 KB |
Output is correct |
| 7 |
Correct |
1 ms |
336 KB |
Output is correct |
| 8 |
Correct |
1 ms |
336 KB |
Output is correct |
| 9 |
Correct |
1 ms |
336 KB |
Output is correct |
| 10 |
Correct |
1 ms |
336 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
1 ms |
336 KB |
Output is correct |
| 2 |
Correct |
1 ms |
336 KB |
Output is correct |
| 3 |
Correct |
2 ms |
336 KB |
Output is correct |
| 4 |
Correct |
1 ms |
336 KB |
Output is correct |
| 5 |
Correct |
1 ms |
336 KB |
Output is correct |
| 6 |
Correct |
2 ms |
336 KB |
Output is correct |
| 7 |
Correct |
1 ms |
336 KB |
Output is correct |
| 8 |
Correct |
1 ms |
336 KB |
Output is correct |
| 9 |
Correct |
1 ms |
336 KB |
Output is correct |
| 10 |
Correct |
1 ms |
336 KB |
Output is correct |
| 11 |
Correct |
2 ms |
504 KB |
Output is correct |
| 12 |
Correct |
1 ms |
464 KB |
Output is correct |
| 13 |
Correct |
1 ms |
432 KB |
Output is correct |
| 14 |
Correct |
1 ms |
336 KB |
Output is correct |
| 15 |
Correct |
1 ms |
336 KB |
Output is correct |
| 16 |
Correct |
1 ms |
336 KB |
Output is correct |
| 17 |
Correct |
1 ms |
336 KB |
Output is correct |
| 18 |
Correct |
1 ms |
504 KB |
Output is correct |
| 19 |
Correct |
1 ms |
336 KB |
Output is correct |
| 20 |
Correct |
1 ms |
336 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
51 ms |
1864 KB |
Output is correct |
| 2 |
Correct |
43 ms |
1708 KB |
Output is correct |
| 3 |
Correct |
43 ms |
1608 KB |
Output is correct |
| 4 |
Correct |
51 ms |
1880 KB |
Output is correct |
| 5 |
Correct |
56 ms |
1720 KB |
Output is correct |
| 6 |
Correct |
1 ms |
336 KB |
Output is correct |
| 7 |
Correct |
1 ms |
336 KB |
Output is correct |
| 8 |
Correct |
2 ms |
336 KB |
Output is correct |
| 9 |
Correct |
1 ms |
336 KB |
Output is correct |
| 10 |
Correct |
1 ms |
336 KB |
Output is correct |
| 11 |
Correct |
2 ms |
336 KB |
Output is correct |
| 12 |
Correct |
1 ms |
336 KB |
Output is correct |
| 13 |
Correct |
1 ms |
336 KB |
Output is correct |
| 14 |
Correct |
1 ms |
336 KB |
Output is correct |
| 15 |
Correct |
1 ms |
336 KB |
Output is correct |
| 16 |
Correct |
2 ms |
504 KB |
Output is correct |
| 17 |
Correct |
1 ms |
464 KB |
Output is correct |
| 18 |
Correct |
1 ms |
432 KB |
Output is correct |
| 19 |
Correct |
1 ms |
336 KB |
Output is correct |
| 20 |
Correct |
1 ms |
336 KB |
Output is correct |
| 21 |
Correct |
1 ms |
336 KB |
Output is correct |
| 22 |
Correct |
1 ms |
336 KB |
Output is correct |
| 23 |
Correct |
1 ms |
504 KB |
Output is correct |
| 24 |
Correct |
1 ms |
336 KB |
Output is correct |
| 25 |
Correct |
1 ms |
336 KB |
Output is correct |
| 26 |
Correct |
99 ms |
1872 KB |
Output is correct |
| 27 |
Correct |
94 ms |
1728 KB |
Output is correct |
| 28 |
Correct |
73 ms |
1608 KB |
Output is correct |
| 29 |
Correct |
92 ms |
1864 KB |
Output is correct |
| 30 |
Correct |
87 ms |
1616 KB |
Output is correct |
| 31 |
Correct |
81 ms |
1608 KB |
Output is correct |
| 32 |
Correct |
91 ms |
1876 KB |
Output is correct |
| 33 |
Correct |
95 ms |
1864 KB |
Output is correct |
| 34 |
Correct |
97 ms |
1864 KB |
Output is correct |
| 35 |
Correct |
97 ms |
1864 KB |
Output is correct |
