oj.uz

답안 #434742

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
434742 2021-06-21T16:34:31 Z rqi 식물 비교 (IOI20_plants) C++14
5 / 100
 98 ms 8148 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 = 1; 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

# 결과 실행 시간 메모리 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 57 ms 3028 KB Output is correct
7 Correct 79 ms 3636 KB Output is correct
8 Correct 95 ms 8016 KB Output is correct
9 Correct 94 ms 8060 KB Output is correct
10 Correct 92 ms 8132 KB Output is correct
11 Correct 98 ms 8060 KB Output is correct
12 Correct 90 ms 8020 KB Output is correct
13 Correct 87 ms 8148 KB Output is correct
14 Correct 91 ms 8044 KB Output is correct

Subtask #2
0 / 14.0

# 결과 실행 시간 메모리 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 Runtime error 1 ms 460 KB Execution killed with signal 6
5 Halted 0 ms 0 KB -

Subtask #3
0 / 13.0

# 결과 실행 시간 메모리 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 Runtime error 1 ms 460 KB Execution killed with signal 6
5 Halted 0 ms 0 KB -

Subtask #4
0 / 17.0

# 결과 실행 시간 메모리 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

# 결과 실행 시간 메모리 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 Runtime error 1 ms 460 KB Execution killed with signal 6
6 Halted 0 ms 0 KB -

Subtask #6
0 / 15.0

# 결과 실행 시간 메모리 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 Runtime error 1 ms 460 KB Execution killed with signal 6
5 Halted 0 ms 0 KB -

Subtask #7
0 / 25.0

# 결과 실행 시간 메모리 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 57 ms 3028 KB Output is correct
7 Correct 79 ms 3636 KB Output is correct
8 Correct 95 ms 8016 KB Output is correct
9 Correct 94 ms 8060 KB Output is correct
10 Correct 92 ms 8132 KB Output is correct
11 Correct 98 ms 8060 KB Output is correct
12 Correct 90 ms 8020 KB Output is correct
13 Correct 87 ms 8148 KB Output is correct
14 Correct 91 ms 8044 KB Output is correct
15 Correct 1 ms 204 KB Output is correct
16 Correct 1 ms 204 KB Output is correct
17 Correct 1 ms 204 KB Output is correct
18 Runtime error 1 ms 460 KB Execution killed with signal 6
19 Halted 0 ms 0 KB -