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Submission #819814

# Submission time Handle Problem Language Result Execution time Memory
819814 2023-08-10T13:51:29 Z Abrar_Al_Samit Comparing Plants (IOI20_plants) C++17
0 / 100
 1 ms 1032 KB 
#include <bits/stdc++.h>
#include "plants.h"
using namespace std;

const int nax = 2e5 + 2;
int n, k;
int head[nax], pos[nax];

void init(int K, vector<int> r) {
	k = K;
	n = r.size();

	memset(head, -1, sizeof head);

	int p = -1;
	for(int i=0; i<n; ++i) {
		int pr = (i - 1 + n) % n;

		if(!r[pr] && r[i]) { //down
			p = i;
			break;
		}
	}
	assert(p!=-1);

	int st = p;
	while(1) {
		int j = p;
		pos[p] = 1;
		head[p] = p;
		int at = 1;
		while(r[j]) {
			j = (j+1)%n;
			head[j] = p;
			pos[j] = ++at;
		}

		while(!r[j]) j = (j+1)%n;

		if(j==st) break;

		p = j;
	}
}

int compare_plants(int x, int y) {
	if(head[x] == head[y] && head[x]!=-1) {
		return (pos[x] < pos[y]) ? -1 : 1;
	}
	return 0;
}

Subtask #1
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 980 KB Output is correct
2 Correct 1 ms 980 KB Output is correct
3 Correct 1 ms 980 KB Output is correct
4 Incorrect 1 ms 980 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #2
0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 980 KB Output is correct
2 Correct 1 ms 980 KB Output is correct
3 Incorrect 1 ms 980 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #3
0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 980 KB Output is correct
2 Correct 1 ms 980 KB Output is correct
3 Incorrect 1 ms 980 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #4
0 / 17.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 980 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 980 KB Output is correct
2 Correct 1 ms 980 KB Output is correct
3 Incorrect 1 ms 980 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #6
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 980 KB Output is correct
2 Correct 1 ms 980 KB Output is correct
3 Incorrect 1 ms 1032 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #7
0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 980 KB Output is correct
2 Correct 1 ms 980 KB Output is correct
3 Correct 1 ms 980 KB Output is correct
4 Incorrect 1 ms 980 KB Output isn't correct
5 Halted 0 ms 0 KB -