oj.uz

Submission #168678

# Submission time Handle Problem Language Result Execution time Memory
168678 2019-12-15T08:03:52 Z Shafin666 Cave (IOI13_cave) C++14
100 / 100
 1295 ms 640 KB 
#include <bits/stdc++.h>
#include "cave.h"
#define pb push_back
#define pii pair<int, int>
#define nyan "(=^･ω･^=)"
#define read_input         freopen("in.txt","r", stdin)
#define print_output       freopen("out.txt","w", stdout)
typedef long long ll;
typedef long double ld;
using namespace std;

int n;

void filter(int *a, int *b) {
	for(int i = 0; i < n; i++) 
		if(b[i] != -1) a[i] = b[i];
}

void flip(int *a, int l, int r) {
	for(int i = l; i <= r; i++) a[i] ^= 1;
}

void exploreCave(int N) {
	n = N;
    //tryCombination(a);

    int a[N], b[N], D[N];

    memset(b, -1, sizeof b);

    for(int i = 0; i < N-1; i++) {
    	int t1 = i+1;
    	
    	memset(a, 0, sizeof a);
    	filter(a, b);
    	
    	int check = tryCombination(a);
    	int x = 0;

    	if(check != -1 && check < t1) { // i'th gate does not open with 0
    		flip(a, 0, n-1);
    		filter(a, b);
    		x = 1;
    	}  

    	memset(a, 0, sizeof a);
    	if(x) flip(a, 0, n-1);

    	int lo = 0, hi = n-1;
    	while(lo < hi) {
    		int mid = lo + hi >> 1;

    		flip(a, lo, mid); filter(a, b);

    		int t2 = tryCombination(a);

 			if(t2 >= t1 || t2 == -1) lo = mid+1;
 			else {
 				hi = mid;
 				flip(a, lo, mid);
 			}
    	}
 
    	b[lo] = a[lo]; // correct direction of switch of i'th door
    	D[lo] = i;
    }

    int hole; 
    for(int i = 0; i < n; i++) if(b[i] == -1) hole = i;
    memset(a, 0, sizeof a); filter(a, b);
    int check = tryCombination(a);

    if(check == -1) b[hole] = 0;
    else b[hole] = 1;

    D[hole] = n-1;


    /*for(int i = 0; i < n; i++) {
    	b[i] ^= 1;
    	D[i] = tryCombination(b);
    	b[i] ^= 1;
    }*/

    answer(b, D);
}

Compilation message

cave.cpp: In function 'void exploreCave(int)':
cave.cpp:51:20: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
       int mid = lo + hi >> 1;
                 ~~~^~~~
cave.cpp:76:13: warning: 'hole' may be used uninitialized in this function [-Wmaybe-uninitialized]
     D[hole] = n-1;
     ~~~~~~~~^~~~~

Subtask #1
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 333 ms 384 KB Output is correct
2 Correct 369 ms 484 KB Output is correct
3 Correct 686 ms 492 KB Output is correct
4 Correct 355 ms 488 KB Output is correct
5 Correct 537 ms 488 KB Output is correct
6 Correct 568 ms 516 KB Output is correct
7 Correct 742 ms 512 KB Output is correct
8 Correct 5 ms 396 KB Output is correct
9 Correct 5 ms 512 KB Output is correct
10 Correct 5 ms 512 KB Output is correct
11 Correct 5 ms 384 KB Output is correct
12 Correct 550 ms 512 KB Output is correct
13 Correct 612 ms 516 KB Output is correct
14 Correct 500 ms 492 KB Output is correct

Subtask #2
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 589 ms 504 KB Output is correct
2 Correct 6 ms 512 KB Output is correct
3 Correct 554 ms 520 KB Output is correct
4 Correct 5 ms 384 KB Output is correct
5 Correct 5 ms 384 KB Output is correct
6 Correct 594 ms 488 KB Output is correct
7 Correct 571 ms 500 KB Output is correct
8 Correct 1098 ms 504 KB Output is correct
9 Correct 1152 ms 512 KB Output is correct
10 Correct 1130 ms 508 KB Output is correct
11 Correct 484 ms 516 KB Output is correct

Subtask #3
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 512 KB Output is correct
2 Correct 5 ms 384 KB Output is correct
3 Correct 5 ms 512 KB Output is correct
4 Correct 5 ms 512 KB Output is correct
5 Correct 6 ms 512 KB Output is correct
6 Correct 5 ms 384 KB Output is correct
7 Correct 6 ms 384 KB Output is correct
8 Correct 5 ms 512 KB Output is correct
9 Correct 6 ms 384 KB Output is correct
10 Correct 5 ms 384 KB Output is correct
11 Correct 6 ms 512 KB Output is correct
12 Correct 6 ms 460 KB Output is correct
13 Correct 6 ms 460 KB Output is correct
14 Correct 6 ms 384 KB Output is correct

Subtask #4
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 512 KB Output is correct
2 Correct 5 ms 384 KB Output is correct
3 Correct 5 ms 512 KB Output is correct
4 Correct 5 ms 512 KB Output is correct
5 Correct 6 ms 512 KB Output is correct
6 Correct 5 ms 384 KB Output is correct
7 Correct 6 ms 384 KB Output is correct
8 Correct 5 ms 512 KB Output is correct
9 Correct 6 ms 384 KB Output is correct
10 Correct 5 ms 384 KB Output is correct
11 Correct 6 ms 512 KB Output is correct
12 Correct 6 ms 460 KB Output is correct
13 Correct 6 ms 460 KB Output is correct
14 Correct 6 ms 384 KB Output is correct
15 Correct 5 ms 512 KB Output is correct
16 Correct 5 ms 384 KB Output is correct
17 Correct 6 ms 384 KB Output is correct
18 Correct 5 ms 512 KB Output is correct
19 Correct 6 ms 512 KB Output is correct
20 Correct 78 ms 512 KB Output is correct
21 Correct 5 ms 384 KB Output is correct
22 Correct 6 ms 512 KB Output is correct
23 Correct 180 ms 512 KB Output is correct
24 Correct 165 ms 512 KB Output is correct
25 Correct 150 ms 512 KB Output is correct
26 Correct 6 ms 332 KB Output is correct
27 Correct 6 ms 384 KB Output is correct
28 Correct 79 ms 512 KB Output is correct
29 Correct 5 ms 512 KB Output is correct
30 Correct 75 ms 512 KB Output is correct
31 Correct 73 ms 512 KB Output is correct
32 Correct 5 ms 384 KB Output is correct
33 Correct 6 ms 384 KB Output is correct
34 Correct 6 ms 384 KB Output is correct
35 Correct 184 ms 448 KB Output is correct
36 Correct 133 ms 448 KB Output is correct
37 Correct 6 ms 512 KB Output is correct

Subtask #5
24.0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 333 ms 384 KB Output is correct
2 Correct 369 ms 484 KB Output is correct
3 Correct 686 ms 492 KB Output is correct
4 Correct 355 ms 488 KB Output is correct
5 Correct 537 ms 488 KB Output is correct
6 Correct 568 ms 516 KB Output is correct
7 Correct 742 ms 512 KB Output is correct
8 Correct 5 ms 396 KB Output is correct
9 Correct 5 ms 512 KB Output is correct
10 Correct 5 ms 512 KB Output is correct
11 Correct 5 ms 384 KB Output is correct
12 Correct 550 ms 512 KB Output is correct
13 Correct 612 ms 516 KB Output is correct
14 Correct 500 ms 492 KB Output is correct
15 Correct 589 ms 504 KB Output is correct
16 Correct 6 ms 512 KB Output is correct
17 Correct 554 ms 520 KB Output is correct
18 Correct 5 ms 384 KB Output is correct
19 Correct 5 ms 384 KB Output is correct
20 Correct 594 ms 488 KB Output is correct
21 Correct 571 ms 500 KB Output is correct
22 Correct 1098 ms 504 KB Output is correct
23 Correct 1152 ms 512 KB Output is correct
24 Correct 1130 ms 508 KB Output is correct
25 Correct 484 ms 516 KB Output is correct
26 Correct 5 ms 512 KB Output is correct
27 Correct 5 ms 384 KB Output is correct
28 Correct 5 ms 512 KB Output is correct
29 Correct 5 ms 512 KB Output is correct
30 Correct 6 ms 512 KB Output is correct
31 Correct 5 ms 384 KB Output is correct
32 Correct 6 ms 384 KB Output is correct
33 Correct 5 ms 512 KB Output is correct
34 Correct 6 ms 384 KB Output is correct
35 Correct 5 ms 384 KB Output is correct
36 Correct 6 ms 512 KB Output is correct
37 Correct 6 ms 460 KB Output is correct
38 Correct 6 ms 460 KB Output is correct
39 Correct 6 ms 384 KB Output is correct
40 Correct 5 ms 512 KB Output is correct
41 Correct 5 ms 384 KB Output is correct
42 Correct 6 ms 384 KB Output is correct
43 Correct 5 ms 512 KB Output is correct
44 Correct 6 ms 512 KB Output is correct
45 Correct 78 ms 512 KB Output is correct
46 Correct 5 ms 384 KB Output is correct
47 Correct 6 ms 512 KB Output is correct
48 Correct 180 ms 512 KB Output is correct
49 Correct 165 ms 512 KB Output is correct
50 Correct 150 ms 512 KB Output is correct
51 Correct 6 ms 332 KB Output is correct
52 Correct 6 ms 384 KB Output is correct
53 Correct 79 ms 512 KB Output is correct
54 Correct 5 ms 512 KB Output is correct
55 Correct 75 ms 512 KB Output is correct
56 Correct 73 ms 512 KB Output is correct
57 Correct 5 ms 384 KB Output is correct
58 Correct 6 ms 384 KB Output is correct
59 Correct 6 ms 384 KB Output is correct
60 Correct 184 ms 448 KB Output is correct
61 Correct 133 ms 448 KB Output is correct
62 Correct 6 ms 512 KB Output is correct
63 Correct 384 ms 504 KB Output is correct
64 Correct 433 ms 500 KB Output is correct
65 Correct 607 ms 512 KB Output is correct
66 Correct 392 ms 484 KB Output is correct
67 Correct 556 ms 496 KB Output is correct
68 Correct 484 ms 496 KB Output is correct
69 Correct 533 ms 632 KB Output is correct
70 Correct 5 ms 384 KB Output is correct
71 Correct 5 ms 384 KB Output is correct
72 Correct 478 ms 500 KB Output is correct
73 Correct 533 ms 508 KB Output is correct
74 Correct 485 ms 488 KB Output is correct
75 Correct 544 ms 504 KB Output is correct
76 Correct 5 ms 512 KB Output is correct
77 Correct 5 ms 384 KB Output is correct
78 Correct 590 ms 492 KB Output is correct
79 Correct 493 ms 504 KB Output is correct
80 Correct 1101 ms 512 KB Output is correct
81 Correct 1151 ms 512 KB Output is correct
82 Correct 1110 ms 640 KB Output is correct
83 Correct 561 ms 496 KB Output is correct
84 Correct 5 ms 512 KB Output is correct
85 Correct 85 ms 452 KB Output is correct
86 Correct 575 ms 504 KB Output is correct
87 Correct 5 ms 384 KB Output is correct
88 Correct 5 ms 384 KB Output is correct
89 Correct 146 ms 448 KB Output is correct
90 Correct 153 ms 448 KB Output is correct
91 Correct 150 ms 512 KB Output is correct
92 Correct 1295 ms 504 KB Output is correct
93 Correct 1139 ms 524 KB Output is correct
94 Correct 1188 ms 640 KB Output is correct
95 Correct 5 ms 384 KB Output is correct
96 Correct 5 ms 384 KB Output is correct
97 Correct 652 ms 516 KB Output is correct
98 Correct 86 ms 512 KB Output is correct
99 Correct 525 ms 492 KB Output is correct
100 Correct 5 ms 512 KB Output is correct
101 Correct 114 ms 384 KB Output is correct
102 Correct 85 ms 500 KB Output is correct
103 Correct 587 ms 628 KB Output is correct
104 Correct 5 ms 512 KB Output is correct
105 Correct 5 ms 460 KB Output is correct
106 Correct 6 ms 512 KB Output is correct
107 Correct 155 ms 396 KB Output is correct
108 Correct 165 ms 452 KB Output is correct
109 Correct 1187 ms 640 KB Output is correct
110 Correct 1104 ms 512 KB Output is correct
111 Correct 5 ms 384 KB Output is correct