#include <bits/stdc++.h>
using namespace std;
int n;
int ask_xy(vector<int> xs, vector<int> ys) {
vector<string> out(n, string(n, '0'));
for (auto x : xs) for (auto y : ys) out[y][x] = '1';
cout << "?\n";
for (int i = 0; i < n; ++i) cout << out[i] << "\n";
cout << flush;
int res;
cin >> res;
return res;
}
void answer_xy(vector<pair<int, int>> xys) {
vector<string> out(n, string(n, '0'));
for (auto [x, y] : xys) out[y][x] = '1';
cout << "!\n";
for (int i = 0; i < n; ++i) cout << out[i] << "\n";
cout << flush;
}
int vertical_cnt(int x, vector<int> ys) {
if (ys.size() == 1) {
int none0 = -1, none1 = -1;
for (int j = 0; j < n; ++j) {
if (find(ys.begin(), ys.end(), j) == ys.end()) {
if (none0 == -1) none0 = j;
else none1 = j;
}
}
return vertical_cnt(x, {ys[0], none0, none1}) - vertical_cnt(x, {none0, none1});
}
int res = ask_xy({x}, ys);
if (res == n) return ys.size();
if (res == ys.size() * n) return 0;
int horiz_cnt = (res - n) / (n - 1);
return ys.size() - horiz_cnt;
}
// finds a vertical light if it exists
int find_vertical(int x, vector<int> ys) {
if (ys.size() == 1) {
return ys[0];
}
vector<int> yl, yr;
for (int i = 0; i < ys.size(); ++i) {
if (i % 2) yl.push_back(ys[i]);
else yr.push_back(ys[i]);
}
if (vertical_cnt(x, yl) == 0) {
return find_vertical(x, yr);
} else {
return find_vertical(x, yl);
}
}
void solve() {
cin >> n;
vector<int> xs;
vector<pair<int, int>> xys;
for (int x = 0; x < n; ++x) {
vector<int> ys(n);
iota(ys.begin(), ys.end(), 0);
if (vertical_cnt(x, ys) == 0) {
xys.clear();
for (int i = 0; i < n; ++i) xys.push_back({x, i});
answer_xy(xys);
return;
} else {
int y = find_vertical(x, ys);
xys.push_back({x, y});
}
}
answer_xy(xys);
}
int main() {
cin.tie(0)->sync_with_stdio(0);
int t = 1;
solve();
}
Compilation message
Main.cpp: In function 'int vertical_cnt(int, std::vector<int>)':
Main.cpp:38:13: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
38 | if (res == ys.size() * n) return 0;
| ~~~~^~~~~~~~~~~~~~~~
Main.cpp: In function 'int find_vertical(int, std::vector<int>)':
Main.cpp:49:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
49 | for (int i = 0; i < ys.size(); ++i) {
| ~~^~~~~~~~~~~
Main.cpp: In function 'int main()':
Main.cpp:82:9: warning: unused variable 't' [-Wunused-variable]
82 | int t = 1;
| ^
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
1 ms |
344 KB |
Output is correct |
| 2 |
Correct |
0 ms |
344 KB |
Output is correct |
| 3 |
Correct |
0 ms |
344 KB |
Output is correct |
| 4 |
Correct |
0 ms |
344 KB |
Output is correct |
| 5 |
Correct |
1 ms |
344 KB |
Output is correct |
| 6 |
Correct |
0 ms |
344 KB |
Output is correct |
| 7 |
Correct |
0 ms |
344 KB |
Output is correct |
| 8 |
Correct |
0 ms |
344 KB |
Output is correct |
| 9 |
Correct |
0 ms |
344 KB |
Output is correct |
| 10 |
Correct |
0 ms |
344 KB |
Output is correct |
| 11 |
Correct |
0 ms |
344 KB |
Output is correct |
| 12 |
Correct |
0 ms |
344 KB |
Output is correct |
| 13 |
Correct |
0 ms |
596 KB |
Output is correct |
| 14 |
Correct |
1 ms |
344 KB |
Output is correct |
| 15 |
Correct |
0 ms |
344 KB |
Output is correct |
| 16 |
Correct |
0 ms |
344 KB |
Output is correct |
| 17 |
Correct |
0 ms |
344 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
0 ms |
344 KB |
Output is correct |
| 2 |
Correct |
0 ms |
344 KB |
Output is correct |
| 3 |
Correct |
0 ms |
344 KB |
Output is correct |
| 4 |
Correct |
0 ms |
344 KB |
Output is correct |
| 5 |
Correct |
0 ms |
344 KB |
Output is correct |
| 6 |
Correct |
0 ms |
344 KB |
Output is correct |
| 7 |
Correct |
0 ms |
344 KB |
Output is correct |
| 8 |
Correct |
0 ms |
344 KB |
Output is correct |
| 9 |
Correct |
0 ms |
344 KB |
Output is correct |
| 10 |
Correct |
0 ms |
344 KB |
Output is correct |
| 11 |
Correct |
0 ms |
344 KB |
Output is correct |
| 12 |
Correct |
1 ms |
344 KB |
Output is correct |
| 13 |
Correct |
0 ms |
344 KB |
Output is correct |
| 14 |
Correct |
0 ms |
344 KB |
Output is correct |
| 15 |
Correct |
0 ms |
344 KB |
Output is correct |
| 16 |
Correct |
0 ms |
344 KB |
Output is correct |
| 17 |
Correct |
1 ms |
344 KB |
Output is correct |
| 18 |
Correct |
1 ms |
344 KB |
Output is correct |
| 19 |
Correct |
0 ms |
344 KB |
Output is correct |
| 20 |
Correct |
0 ms |
344 KB |
Output is correct |
| 21 |
Correct |
0 ms |
344 KB |
Output is correct |
| 22 |
Correct |
1 ms |
344 KB |
Output is correct |
| 23 |
Correct |
0 ms |
344 KB |
Output is correct |
| 24 |
Correct |
0 ms |
344 KB |
Output is correct |
| 25 |
Correct |
0 ms |
344 KB |
Output is correct |
| 26 |
Correct |
0 ms |
344 KB |
Output is correct |
| 27 |
Correct |
0 ms |
344 KB |
Output is correct |
| 28 |
Correct |
0 ms |
344 KB |
Output is correct |
| 29 |
Correct |
0 ms |
344 KB |
Output is correct |
| 30 |
Correct |
0 ms |
344 KB |
Output is correct |
| 31 |
Correct |
0 ms |
344 KB |
Output is correct |
| 32 |
Correct |
0 ms |
344 KB |
Output is correct |
| 33 |
Correct |
0 ms |
344 KB |
Output is correct |
| 34 |
Correct |
0 ms |
344 KB |
Output is correct |
| 35 |
Correct |
0 ms |
344 KB |
Output is correct |
| 36 |
Correct |
0 ms |
344 KB |
Output is correct |
| 37 |
Correct |
0 ms |
344 KB |
Output is correct |
| 38 |
Correct |
0 ms |
344 KB |
Output is correct |
| 39 |
Correct |
0 ms |
344 KB |
Output is correct |
| 40 |
Correct |
0 ms |
344 KB |
Output is correct |
| 41 |
Correct |
0 ms |
344 KB |
Output is correct |
| 42 |
Correct |
1 ms |
344 KB |
Output is correct |
| 43 |
Correct |
0 ms |
344 KB |
Output is correct |
| 44 |
Correct |
0 ms |
344 KB |
Output is correct |
| 45 |
Correct |
0 ms |
344 KB |
Output is correct |
| 46 |
Correct |
0 ms |
344 KB |
Output is correct |
| 47 |
Correct |
0 ms |
344 KB |
Output is correct |
| 48 |
Correct |
0 ms |
344 KB |
Output is correct |
| 49 |
Correct |
0 ms |
344 KB |
Output is correct |
| 50 |
Correct |
0 ms |
344 KB |
Output is correct |
| 51 |
Correct |
0 ms |
344 KB |
Output is correct |
| 52 |
Correct |
1 ms |
388 KB |
Output is correct |
| 53 |
Correct |
0 ms |
344 KB |
Output is correct |
| 54 |
Correct |
0 ms |
344 KB |
Output is correct |
| 55 |
Correct |
1 ms |
344 KB |
Output is correct |
| 56 |
Correct |
1 ms |
344 KB |
Output is correct |
| 57 |
Correct |
0 ms |
344 KB |
Output is correct |
| 58 |
Correct |
0 ms |
344 KB |
Output is correct |
| 59 |
Correct |
0 ms |
344 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
0 ms |
344 KB |
Output is correct |
| 2 |
Correct |
0 ms |
344 KB |
Output is correct |
| 3 |
Correct |
0 ms |
344 KB |
Output is correct |
| 4 |
Correct |
0 ms |
344 KB |
Output is correct |
| 5 |
Correct |
0 ms |
344 KB |
Output is correct |
| 6 |
Correct |
0 ms |
344 KB |
Output is correct |
| 7 |
Correct |
0 ms |
344 KB |
Output is correct |
| 8 |
Correct |
0 ms |
344 KB |
Output is correct |
| 9 |
Correct |
0 ms |
344 KB |
Output is correct |
| 10 |
Correct |
0 ms |
344 KB |
Output is correct |
| 11 |
Correct |
0 ms |
344 KB |
Output is correct |
| 12 |
Correct |
0 ms |
344 KB |
Output is correct |
| 13 |
Correct |
0 ms |
344 KB |
Output is correct |
| 14 |
Correct |
0 ms |
344 KB |
Output is correct |
| 15 |
Correct |
0 ms |
344 KB |
Output is correct |
| 16 |
Correct |
0 ms |
344 KB |
Output is correct |
| 17 |
Correct |
1 ms |
344 KB |
Output is correct |
| 18 |
Correct |
0 ms |
340 KB |
Output is correct |
| 19 |
Correct |
1 ms |
344 KB |
Output is correct |
| 20 |
Correct |
0 ms |
344 KB |
Output is correct |
| 21 |
Correct |
0 ms |
344 KB |
Output is correct |
| 22 |
Correct |
0 ms |
344 KB |
Output is correct |
| 23 |
Correct |
0 ms |
344 KB |
Output is correct |
| 24 |
Correct |
0 ms |
344 KB |
Output is correct |
| 25 |
Correct |
1 ms |
344 KB |
Output is correct |
| 26 |
Correct |
0 ms |
344 KB |
Output is correct |
| 27 |
Correct |
0 ms |
344 KB |
Output is correct |
| 28 |
Correct |
0 ms |
344 KB |
Output is correct |
| 29 |
Correct |
0 ms |
344 KB |
Output is correct |
| 30 |
Correct |
0 ms |
344 KB |
Output is correct |
| 31 |
Correct |
0 ms |
344 KB |
Output is correct |
| 32 |
Correct |
1 ms |
344 KB |
Output is correct |
| 33 |
Correct |
1 ms |
340 KB |
Output is correct |
| 34 |
Correct |
0 ms |
344 KB |
Output is correct |
| 35 |
Correct |
0 ms |
344 KB |
Output is correct |
| 36 |
Correct |
0 ms |
344 KB |
Output is correct |
| 37 |
Correct |
1 ms |
344 KB |
Output is correct |
| 38 |
Correct |
0 ms |
344 KB |
Output is correct |
| 39 |
Correct |
0 ms |
344 KB |
Output is correct |
| 40 |
Correct |
0 ms |
344 KB |
Output is correct |
| 41 |
Correct |
0 ms |
344 KB |
Output is correct |
| 42 |
Correct |
0 ms |
344 KB |
Output is correct |
| 43 |
Correct |
0 ms |
344 KB |
Output is correct |
| 44 |
Correct |
0 ms |
344 KB |
Output is correct |
| 45 |
Correct |
1 ms |
344 KB |
Output is correct |
| 46 |
Correct |
0 ms |
344 KB |
Output is correct |
| 47 |
Correct |
0 ms |
344 KB |
Output is correct |
| 48 |
Correct |
0 ms |
344 KB |
Output is correct |
| 49 |
Correct |
0 ms |
344 KB |
Output is correct |
| 50 |
Correct |
1 ms |
344 KB |
Output is correct |
| 51 |
Correct |
0 ms |
344 KB |
Output is correct |
| 52 |
Correct |
0 ms |
344 KB |
Output is correct |
| 53 |
Correct |
0 ms |
344 KB |
Output is correct |
| 54 |
Correct |
1 ms |
344 KB |
Output is correct |
| 55 |
Correct |
0 ms |
344 KB |
Output is correct |
| 56 |
Correct |
0 ms |
344 KB |
Output is correct |
| 57 |
Correct |
0 ms |
344 KB |
Output is correct |
| 58 |
Correct |
1 ms |
344 KB |
Output is correct |
| 59 |
Correct |
0 ms |
344 KB |
Output is correct |
| 60 |
Partially correct |
9 ms |
592 KB |
Partially correct |
| 61 |
Partially correct |
10 ms |
472 KB |
Partially correct |
| 62 |
Partially correct |
12 ms |
516 KB |
Partially correct |
| 63 |
Partially correct |
10 ms |
480 KB |
Partially correct |
| 64 |
Partially correct |
17 ms |
484 KB |
Partially correct |
| 65 |
Partially correct |
11 ms |
728 KB |
Partially correct |
| 66 |
Partially correct |
14 ms |
480 KB |
Partially correct |
| 67 |
Partially correct |
11 ms |
640 KB |
Partially correct |
| 68 |
Partially correct |
11 ms |
568 KB |
Partially correct |
| 69 |
Partially correct |
10 ms |
472 KB |
Partially correct |
| 70 |
Partially correct |
11 ms |
568 KB |
Partially correct |
| 71 |
Partially correct |
13 ms |
712 KB |
Partially correct |
| 72 |
Partially correct |
14 ms |
648 KB |
Partially correct |
| 73 |
Partially correct |
11 ms |
480 KB |
Partially correct |
| 74 |
Partially correct |
13 ms |
684 KB |
Partially correct |
| 75 |
Correct |
0 ms |
344 KB |
Output is correct |
| 76 |
Partially correct |
2 ms |
480 KB |
Partially correct |
| 77 |
Partially correct |
9 ms |
472 KB |
Partially correct |
| 78 |
Partially correct |
11 ms |
624 KB |
Partially correct |
| 79 |
Partially correct |
4 ms |
480 KB |
Partially correct |
| 80 |
Partially correct |
5 ms |
480 KB |
Partially correct |
| 81 |
Partially correct |
9 ms |
480 KB |
Partially correct |
| 82 |
Partially correct |
10 ms |
808 KB |
Partially correct |
| 83 |
Partially correct |
10 ms |
476 KB |
Partially correct |
| 84 |
Partially correct |
10 ms |
480 KB |
Partially correct |
| 85 |
Partially correct |
10 ms |
472 KB |
Partially correct |
| 86 |
Partially correct |
12 ms |
480 KB |
Partially correct |
| 87 |
Partially correct |
13 ms |
604 KB |
Partially correct |
| 88 |
Partially correct |
10 ms |
724 KB |
Partially correct |
| 89 |
Partially correct |
10 ms |
592 KB |
Partially correct |
| 90 |
Partially correct |
13 ms |
668 KB |
Partially correct |
| 91 |
Partially correct |
15 ms |
480 KB |
Partially correct |
| 92 |
Partially correct |
10 ms |
480 KB |
Partially correct |
| 93 |
Partially correct |
10 ms |
480 KB |
Partially correct |
| 94 |
Partially correct |
12 ms |
1028 KB |
Partially correct |
| 95 |
Partially correct |
12 ms |
480 KB |
Partially correct |
| 96 |
Partially correct |
11 ms |
656 KB |
Partially correct |
| 97 |
Correct |
0 ms |
344 KB |
Output is correct |
