oj.uz

Submission #434746

# Submission time Handle Problem Language Result Execution time Memory
434746 2021-06-21T16:49:29 Z rqi Comparing Plants (IOI20_plants) C++14
5 / 100
 123 ms 8144 KB 
#include "plants.h"
#include <bits/stdc++.h>
using namespace std;

typedef vector<int> vi;
typedef pair<int, int> pi;

#define mp make_pair
#define f first
#define s second

#define sz(x) (int)(x).size()

const int mx = 200005;

int k;
vi r;
int n;
pi rangs[mx][2];

void doK2Init(){
	int start = 0;
	for(int i = 0; i < n; i++){
		if(r[i] != r[0]){
			start = i;
			break;
		}
	}

	int cur = start;

	while(true){
		int end_ind = cur;
		while(r[(end_ind+1) % n] == r[cur]){
			end_ind = (end_ind+1) % n;
		}

		pi interval = mp(cur, (end_ind+1) % n);

		// cout << cur << " " << end_ind << "\n";
		// cout << interval.f << " " << interval.s << "\n";
		for(int i = cur; ; (i = (i+1) % n)){
			if(i == cur){
				rangs[i][1] = mp(r[cur], interval.s);
			}
			else if(i == (end_ind+1) % n){
				rangs[i][0] = mp(r[cur], interval.f);
				break;
			}
			else{
				rangs[i][0] = mp(r[cur], interval.f);
				rangs[i][1] = mp(r[cur], interval.s);
			}
		}

		cur = (end_ind+1) % n;
		if(cur == start) break;
	}

	return;
}

int val[mx];

void init(int _k, vi _r) {
	k = _k;
	r = _r;
	n = sz(r);

	if(k == 2){
		doK2Init();
		return;
	}
		
	for(int i = 0; i < n; i++){
		val[i] = -1;
	}
	for(int i = n-1; i >= 0; i--){
		int cur_pos = -1;
		for(int j = 0; j < n; j++){
			if(val[j] != -1) continue;
			if(r[j] == 0){
				if(cur_pos == -1){
					cur_pos = j;
				}
				else{
					if((n+j-cur_pos)*2 < n){
						cur_pos = j;
					}
				}
			}
		}
		assert(cur_pos != -1);
		val[cur_pos] = i;

		for(int j = 0; j <= k-1; j++){
			r[(cur_pos-j+n) % n]--;
		}
	}
}

bool isInInterval(int test, int int_beg, int int_end){
	if(int_beg <= int_end){
		return (int_beg <= test) && (test <= int_end);
	}

	return (int_beg <= test) || (test <= int_end);
}

int doK2Compare(int x, int y){
	if(isInInterval(y, rangs[x][0].s, x)){
		if(rangs[x][0].f == 1){
			return 1;
		}
		else{
			return -1;
		}
	}
	else if(isInInterval(y, x, rangs[x][1].s)){
		if(rangs[x][1].f == 1){
			return -1;
		}
		else{
			return 1;
		}
	}
	return 0;
}

int compare_plants(int x, int y) {
	if(k == 2){
		return doK2Compare(x, y);
	}

	if(val[x] < val[y]) return -1;
	
	return 1;
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 56 ms 3032 KB Output is correct
7 Correct 65 ms 3648 KB Output is correct
8 Correct 123 ms 8132 KB Output is correct
9 Correct 95 ms 8032 KB Output is correct
10 Correct 91 ms 8048 KB Output is correct
11 Correct 89 ms 8144 KB Output is correct
12 Correct 88 ms 8052 KB Output is correct
13 Correct 87 ms 8044 KB Output is correct
14 Correct 87 ms 8136 KB Output is correct

Subtask #2
0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Runtime error 1 ms 460 KB Execution killed with signal 6
5 Halted 0 ms 0 KB -

Subtask #3
0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Runtime error 1 ms 460 KB Execution killed with signal 6
5 Halted 0 ms 0 KB -

Subtask #4
0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Runtime error 1 ms 460 KB Execution killed with signal 6
3 Halted 0 ms 0 KB -

Subtask #5
0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Runtime error 1 ms 460 KB Execution killed with signal 6
6 Halted 0 ms 0 KB -

Subtask #6
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Runtime error 1 ms 460 KB Execution killed with signal 6
5 Halted 0 ms 0 KB -

Subtask #7
0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 56 ms 3032 KB Output is correct
7 Correct 65 ms 3648 KB Output is correct
8 Correct 123 ms 8132 KB Output is correct
9 Correct 95 ms 8032 KB Output is correct
10 Correct 91 ms 8048 KB Output is correct
11 Correct 89 ms 8144 KB Output is correct
12 Correct 88 ms 8052 KB Output is correct
13 Correct 87 ms 8044 KB Output is correct
14 Correct 87 ms 8136 KB Output is correct
15 Correct 0 ms 204 KB Output is correct
16 Correct 1 ms 204 KB Output is correct
17 Correct 0 ms 204 KB Output is correct
18 Runtime error 1 ms 460 KB Execution killed with signal 6
19 Halted 0 ms 0 KB -