oj.uz

Submission #1102509

# Submission time Handle Problem Language Result Execution time Memory
1102509 2024-10-18T08:13:02 Z EkinOnal Kutije (COCI21_kutije) C++17
70 / 70
 179 ms 1864 KB 
//#pragma GCC optimize("O3,unroll-loops,Ofast")
//#pragma GCC target("avx2,bmi,bmi2,popcnt,lzcnt")
#include <bits/stdc++.h>
using namespace std;

struct DSU {
	vector<int> e; void init(int N) { e = vector<int>(N,-1);}
	int get(int x) { return e[x] < 0 ? x : e[x] = get(e[x]); } 
	bool sameSet(int a, int b) { return get(a) == get(b); }
	int size(int x) { return -e[get(x)]; }
	bool unite(int x, int 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;
int n,m,q,a,b;
int32_t main(){
	ios_base::sync_with_stdio(0); cin.tie(0);		
	scanf("%d %d %d",&n,&m,&q);

	t.init(n+2);
	for(int i=1;i<=m;i++){
		for(int j=1;j<=n;j++){
			scanf("%d",&a); 
			t.unite(j,a);
		}
	}
	while(q--){
		scanf("%d %d",&a,&b);
		if(t.sameSet(a,b)) printf("DA\n");
		else printf("NE\n");
	}
 		
	return 0;	 			
}

Compilation message

Main.cpp: In function 'int32_t main()':
Main.cpp:22:7: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   22 |  scanf("%d %d %d",&n,&m,&q);
      |  ~~~~~^~~~~~~~~~~~~~~~~~~~~
Main.cpp:27:9: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   27 |    scanf("%d",&a);
      |    ~~~~~^~~~~~~~~
Main.cpp:32:8: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   32 |   scanf("%d %d",&a,&b);
      |   ~~~~~^~~~~~~~~~~~~~~

Subtask #1
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 65 ms 1864 KB Output is correct
2 Correct 73 ms 1608 KB Output is correct
3 Correct 51 ms 1512 KB Output is correct
4 Correct 59 ms 1864 KB Output is correct
5 Correct 66 ms 1864 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 2 ms 336 KB Output is correct
3 Correct 1 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 1 ms 336 KB Output is correct
7 Correct 2 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

Subtask #3
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 2 ms 336 KB Output is correct
3 Correct 1 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 1 ms 336 KB Output is correct
7 Correct 2 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 1 ms 336 KB Output is correct
12 Correct 1 ms 460 KB Output is correct
13 Correct 1 ms 336 KB Output is correct
14 Correct 1 ms 504 KB Output is correct
15 Correct 1 ms 336 KB Output is correct
16 Correct 2 ms 336 KB Output is correct
17 Correct 3 ms 336 KB Output is correct
18 Correct 1 ms 336 KB Output is correct
19 Correct 1 ms 336 KB Output is correct
20 Correct 1 ms 336 KB Output is correct

Subtask #4
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 65 ms 1864 KB Output is correct
2 Correct 73 ms 1608 KB Output is correct
3 Correct 51 ms 1512 KB Output is correct
4 Correct 59 ms 1864 KB Output is correct
5 Correct 66 ms 1864 KB Output is correct
6 Correct 1 ms 336 KB Output is correct
7 Correct 2 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 1 ms 336 KB Output is correct
12 Correct 2 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 1 ms 336 KB Output is correct
17 Correct 1 ms 460 KB Output is correct
18 Correct 1 ms 336 KB Output is correct
19 Correct 1 ms 504 KB Output is correct
20 Correct 1 ms 336 KB Output is correct
21 Correct 2 ms 336 KB Output is correct
22 Correct 3 ms 336 KB Output is correct
23 Correct 1 ms 336 KB Output is correct
24 Correct 1 ms 336 KB Output is correct
25 Correct 1 ms 336 KB Output is correct
26 Correct 117 ms 1736 KB Output is correct
27 Correct 118 ms 1732 KB Output is correct
28 Correct 98 ms 1608 KB Output is correct
29 Correct 120 ms 1864 KB Output is correct
30 Correct 108 ms 1608 KB Output is correct
31 Correct 121 ms 1608 KB Output is correct
32 Correct 112 ms 1864 KB Output is correct
33 Correct 126 ms 1864 KB Output is correct
34 Correct 121 ms 1760 KB Output is correct
35 Correct 179 ms 1864 KB Output is correct