oj.uz

답안 #261656

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
261656 2020-08-11T23:40:22 Z super_j6 열대 식물원 (Tropical Garden) (IOI11_garden) C++14
100 / 100
 4569 ms 28964 KB 
#include "garden.h"
#include "gardenlib.h"
#include <iostream>
#include <cstdio>
#include <algorithm>
#include <string.h>
#include <vector>
using namespace std;
#define endl '\n'
#define ll long long
#define pi pair<int, int>
#define f first
#define s second
 
const int inf = 0x3f3f3f3f;
const int mxn = 300000;
int a[mxn][2];
int d[mxn], p[mxn], vis[mxn];
vector<int> g[mxn];
int ans[mxn];
 
void dfs(int c){
	vis[c] = 1;
	for(int i : g[c]){
		if(vis[i]) continue;
		d[i] = d[c] + 1;
		dfs(i);
	}
}
 
void count_routes(int n, int m, int k, int e[][2], int q, int qr[]){
	memset(a, inf, sizeof(a));
	memset(p, -1, sizeof(p));
	for(int i = 0; i < m; i++)
	for(int j = 0; j < 2; j++){
		int x = e[i][j];
		a[x][1] = min(a[x][1], i);
		sort(a[x], a[x] + 2);
	}
	
	for(int i = 0; i < n; i++){
		if(a[i][0] == inf){
			p[i] = i;
			g[i].push_back(i);
		}
	} 
	for(int i = 0; i < m; i++)
	for(int j = 0; j < 2; j++){
		int x = e[i][j], y = e[i][!j];
		for(int l = 0; l < 2; l++){
			if(a[x][l] == i){
				int u = (a[y][0] == i && a[y][1] != inf) * n + y, v = l * n + x;
				p[v] = u;
				g[u].push_back(v);
			} 
		}
	}
	
	for(int t = 0; t < 2; t++){
		memset(d, inf, sizeof(d));
		memset(vis, 0, sizeof(vis));
		
		int x = t * n + k, y, l;
		for(y = x; ~y && !vis[y]; y = p[y]) vis[y] = 1;
		for(int i = p[x]; i != y; i = p[i]) vis[i] = 0;
		
		d[x] = 0;
		dfs(x);
		if(x == y) l = d[p[x]] + 1;
		for(int i = 0; i < n; i++)
		for(int j = 0; j < q; j++){
			if(x != y) ans[j] += d[i] == qr[j];
			else ans[j] += d[i] <= qr[j] && (d[i] % l) == (qr[j] % l);
		}
	}
	
	for(int i = 0; i < q; i++) answer(ans[i]);
}

Compilation message

garden.cpp: In function 'void count_routes(int, int, int, int (*)[2], int, int*)':
garden.cpp:73:57: warning: 'l' may be used uninitialized in this function [-Wmaybe-uninitialized]
    else ans[j] += d[i] <= qr[j] && (d[i] % l) == (qr[j] % l);
                                                  ~~~~~~~^~~~

Subtask #1
49.0 / 49.0

# 결과 실행 시간 메모리 Grader output
1 Correct 9 ms 13312 KB Output is correct
2 Correct 9 ms 13312 KB Output is correct
3 Correct 9 ms 13312 KB Output is correct
4 Correct 9 ms 13312 KB Output is correct
5 Correct 9 ms 13312 KB Output is correct
6 Correct 10 ms 13440 KB Output is correct
7 Correct 9 ms 13304 KB Output is correct
8 Correct 9 ms 13312 KB Output is correct
9 Correct 11 ms 13456 KB Output is correct

Subtask #2
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 9 ms 13312 KB Output is correct
2 Correct 9 ms 13312 KB Output is correct
3 Correct 9 ms 13312 KB Output is correct
4 Correct 9 ms 13312 KB Output is correct
5 Correct 9 ms 13312 KB Output is correct
6 Correct 10 ms 13440 KB Output is correct
7 Correct 9 ms 13304 KB Output is correct
8 Correct 9 ms 13312 KB Output is correct
9 Correct 11 ms 13456 KB Output is correct
10 Correct 9 ms 13312 KB Output is correct
11 Correct 18 ms 14592 KB Output is correct
12 Correct 32 ms 15420 KB Output is correct
13 Correct 54 ms 24952 KB Output is correct
14 Correct 80 ms 19192 KB Output is correct
15 Correct 108 ms 19320 KB Output is correct
16 Correct 86 ms 18168 KB Output is correct
17 Correct 81 ms 17528 KB Output is correct
18 Correct 30 ms 15360 KB Output is correct
19 Correct 84 ms 19164 KB Output is correct
20 Correct 114 ms 19320 KB Output is correct
21 Correct 94 ms 18168 KB Output is correct
22 Correct 98 ms 17528 KB Output is correct
23 Correct 86 ms 19832 KB Output is correct

Subtask #3
31.0 / 31.0

# 결과 실행 시간 메모리 Grader output
1 Correct 9 ms 13312 KB Output is correct
2 Correct 9 ms 13312 KB Output is correct
3 Correct 9 ms 13312 KB Output is correct
4 Correct 9 ms 13312 KB Output is correct
5 Correct 9 ms 13312 KB Output is correct
6 Correct 10 ms 13440 KB Output is correct
7 Correct 9 ms 13304 KB Output is correct
8 Correct 9 ms 13312 KB Output is correct
9 Correct 11 ms 13456 KB Output is correct
10 Correct 9 ms 13312 KB Output is correct
11 Correct 18 ms 14592 KB Output is correct
12 Correct 32 ms 15420 KB Output is correct
13 Correct 54 ms 24952 KB Output is correct
14 Correct 80 ms 19192 KB Output is correct
15 Correct 108 ms 19320 KB Output is correct
16 Correct 86 ms 18168 KB Output is correct
17 Correct 81 ms 17528 KB Output is correct
18 Correct 30 ms 15360 KB Output is correct
19 Correct 84 ms 19164 KB Output is correct
20 Correct 114 ms 19320 KB Output is correct
21 Correct 94 ms 18168 KB Output is correct
22 Correct 98 ms 17528 KB Output is correct
23 Correct 86 ms 19832 KB Output is correct
24 Correct 10 ms 13312 KB Output is correct
25 Correct 200 ms 14720 KB Output is correct
26 Correct 282 ms 15352 KB Output is correct
27 Correct 4300 ms 25080 KB Output is correct
28 Correct 1546 ms 19332 KB Output is correct
29 Correct 4569 ms 19388 KB Output is correct
30 Correct 2821 ms 18188 KB Output is correct
31 Correct 2520 ms 17676 KB Output is correct
32 Correct 201 ms 15352 KB Output is correct
33 Correct 1542 ms 19320 KB Output is correct
34 Correct 4565 ms 19368 KB Output is correct
35 Correct 2934 ms 18168 KB Output is correct
36 Correct 2532 ms 17656 KB Output is correct
37 Correct 1325 ms 19704 KB Output is correct
38 Correct 4315 ms 28964 KB Output is correct