#include <bits/stdc++.h>
#define X first
#define Y second
using namespace std;
int n, m;
char ch;
int a[25][25];
int p[25][25];
vector< pair<int, int> > v;
int maxkr;
int bio[25][25];
int da = 0;
vector< pair<int, int> > pr;
int niz[10];
int g[200][(1 << 20)][2];
void ispisi() {
for (int i = 0; i < m; i ++) {
for (int j = 0; j < maxkr; j ++) {
if (bio[i][j] != -1) {
if (bio[i][j] == 0) cout << '.';
else cout << bio[i][j];
}
}
cout << endl;
}
cout << endl;
system("pause");
}
pair<int, int> mijenjaj(int msk, int w) {
if (w == v.size()) return {0, 0};
int x = v[w].X;
int y = v[w].Y;
int d = 0;
for (int i = 1; i < pr.size(); i ++) {
if (pr[i].X == x+1 && pr[i].Y == y) {
d = 1;
}
else if ((x == pr[i].X && pr[i].Y > y) || x+1 == pr[i].X) {
msk = msk|(1 << pr[i].Y);
}
}
//cout << msk << " i " << d << endl;
if (y == 0) {
if ((msk&(1 << 0)) > 0) msk -= (1 << 0);
return {msk, 0};
}
else {
int nm = 0;
for (int i = 0; i < y; i ++) {
if ((msk&(1 << i)) > 0) nm = (nm|(1 << i));
}
if (d == 1) nm = (nm|(1 << y));
//cout << "nm: " << nm << endl;
int i = y+1;
while (bio[x][i] != -1) {
//cout << i << ": " << (msk&(1 << i)) << endl;
if ((msk&(1 << i)) > 0) nm = (nm|(1 << i));
i ++;
}
return {nm, 0};
}
}
int provjeri() {
for (int i = 0; i <= 6; i ++) niz[i] = 0;
for (int i = 0; i < pr.size(); i ++) {
int x = pr[i].X;
int y = pr[i].Y;
niz[bio[x][y+1]] ++;
if (y-1 >= 0) niz[bio[x][y-1]] ++;
if (p[x][y] == 0) {
niz[bio[x+1][y]] ++;
}
else if (x-1 >= 0) {
niz[bio[x-1][y]] ++;
}
}
for (int i = 1; i <= 6; i ++) {
if (niz[i] == 0) {
for (int j = 0; j < pr.size(); j ++) {
int x = pr[j].X;
int y = pr[j].Y;
bio[x][y] = i;
}
//ispisi();
return 1;
}
}
return 0;
}
void dfs(int w, int mask, int d) {
if (w == v.size()) {
da = 1;
return;
}
if (g[w][mask][d]) return;
g[w][mask][d] = 1;
int x = v[w].X;
int y = v[w].Y;
//cout << x << "," << y << ": " << mask << ", " << d << endl;
if (bio[x][y] > 0 || a[x][y] == 0) {
if (w+1 == v.size()) dfs(w+1, 0, 0);
if (v[w+1].Y == 0) {
int nmask = mask;
if ((nmask&(1 << 0)) > 0) nmask -= (1 << 0);
dfs(w+1, nmask, 0);
}
else {
int nmask = 0;
for (int i = 0; i <= y; i ++) {
if ((mask&(1 << i)) > 0) nmask = nmask|(1 << i);
}
if (d > 0) nmask = nmask|(1 << (y+1));
int i = y+2;
while (bio[x][i] != -1) {
if ((mask&(1 << i)) > 0) nmask = nmask|(1 << i);
i ++;
}
//cout << nmask << endl;
dfs(w+1, nmask, 0);
}
return;
}
if (a[x][y+1] == 1 && a[x][y+2] == 1 && bio[x][y+1] == 0 && bio[x][y+2] == 0) {
pr.clear();
pr.push_back({x, y});
pr.push_back({x, y+1});
pr.push_back({x, y+2});
if (provjeri()) {
pair<int, int> nova = mijenjaj(mask, w+1);
dfs(w+1, nova.X, nova.Y);
if (da) return;
bio[x][y] = 0;
bio[x][y+1] = 0;
bio[x][y+2] = 0;
}
}
if (p[x][y] == 0) {
if (a[x+1][y] == 1 && a[x+1][y-1] == 1 && bio[x+1][y] == 0 && bio[x+1][y-1] == 0) {
pr.clear();
pr.push_back({x, y});
pr.push_back({x+1, y});
pr.push_back({x+1, y-1});
if (provjeri()) {
pair<int, int> nova = mijenjaj(mask, w+1);
dfs(w+1, nova.X, nova.Y);
if (da) return;
bio[x][y] = 0;
bio[x+1][y] = 0;
bio[x+1][y-1] = 0;
}
}
if (a[x+1][y] == 1 && a[x+1][y+1] == 1 && bio[x+1][y] == 0 && bio[x+1][y+1] == 0) {
pr.clear();
pr.push_back({x, y});
pr.push_back({x+1, y});
pr.push_back({x+1, y+1});
if (provjeri()) {
pair<int, int> nova = mijenjaj(mask, w+1);
dfs(w+1, nova.X, nova.Y);
if (da) return;
bio[x][y] = 0;
bio[x+1][y] = 0;
bio[x+1][y+1] = 0;
}
}
if (a[x][y+1] == 1 && a[x+1][y] == 1 && bio[x][y+1] == 0 && bio[x+1][y] == 0) {
pr.clear();
pr.push_back({x, y});
pr.push_back({x, y+1});
pr.push_back({x+1, y});
if (provjeri()) {
pair<int, int> nova = mijenjaj(mask, w+1);
dfs(w+1, nova.X, nova.Y);
if (da) return;
bio[x][y] = 0;
bio[x][y+1] = 0;
bio[x+1][y] = 0;
}
}
}
else {
if (a[x][y+1] == 1 && a[x+1][y+1] == 1 && bio[x][y+1] == 0 && bio[x+1][y+1] == 0) {
pr.clear();
pr.push_back({x, y});
pr.push_back({x, y+1});
pr.push_back({x+1, y+1});
if (provjeri()) {
pair<int, int> nova = mijenjaj(mask, w+1);
dfs(w+1, nova.X, nova.Y);
if (da) return;
bio[x][y] = 0;
bio[x][y+1] = 0;
bio[x+1][y+1] = 0;
}
}
}
}
int main () {
ios_base::sync_with_stdio(false);
cin.tie(0);
cin >> n;
m = n*2;
int poc = n-1;
int kraj = 3*n;
maxkr = 3*n;
memset(bio, -1, sizeof bio);
for (int i = 0; i < m; i ++) {
for (int j = poc; j < kraj; j ++) {
p[i][j] = (i+j+1+n) % 2;
bio[i][j] = 0;
v.push_back({i, j});
cin >> ch;
if (ch == '0') a[i][j] = 1;
}
maxkr = max(maxkr, kraj);
if (i < n-1) {
poc --;
kraj ++;
}
else if (i >= n) {
poc ++;
kraj --;
}
}
/*for (int i = 0; i < m; i ++) {
for (int j = 0; j < maxkr; j ++) {
cout << p[i][j] << " ";
}
cout << endl;
}*/
dfs(0, 0, 0);
if (da == 0) cout << "nemoguce";
else {
for (int i = 0; i < m; i ++) {
for (int j = 0; j < maxkr; j ++) {
if (bio[i][j] != -1) {
if (bio[i][j] == 0) cout << '.';
else cout << bio[i][j];
}
}
cout << endl;
}
}
return 0;
}
Compilation message
trapezi.cpp: In function 'std::pair<int, int> mijenjaj(int, int)':
trapezi.cpp:36:8: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
if (w == v.size()) return {0, 0};
~~^~~~~~~~~~~
trapezi.cpp:42:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for (int i = 1; i < pr.size(); i ++) {
~~^~~~~~~~~~~
trapezi.cpp: In function 'int provjeri()':
trapezi.cpp:82:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for (int i = 0; i < pr.size(); i ++) {
~~^~~~~~~~~~~
trapezi.cpp:98:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for (int j = 0; j < pr.size(); j ++) {
~~^~~~~~~~~~~
trapezi.cpp: In function 'void dfs(int, int, int)':
trapezi.cpp:112:8: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
if (w == v.size()) {
~~^~~~~~~~~~~
trapezi.cpp:126:11: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
if (w+1 == v.size()) dfs(w+1, 0, 0);
~~~~^~~~~~~~~~~
trapezi.cpp: In function 'void ispisi()':
trapezi.cpp:31:8: warning: ignoring return value of 'int system(const char*)', declared with attribute warn_unused_result [-Wunused-result]
system("pause");
~~~~~~^~~~~~~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
2 ms |
384 KB |
Output is correct |
| 2 |
Correct |
2 ms |
384 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
3 ms |
512 KB |
Output is correct |
| 2 |
Correct |
2 ms |
640 KB |
Output is correct |
| 3 |
Correct |
3 ms |
512 KB |
Output is correct |
| 4 |
Correct |
3 ms |
512 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
3 ms |
768 KB |
Output is correct |
| 2 |
Correct |
3 ms |
384 KB |
Output is correct |
| 3 |
Correct |
3 ms |
768 KB |
Output is correct |
| 4 |
Correct |
4 ms |
896 KB |
Output is correct |
| 5 |
Correct |
3 ms |
1024 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
4 ms |
1792 KB |
Output is correct |
| 2 |
Correct |
3 ms |
1408 KB |
Output is correct |
| 3 |
Correct |
2 ms |
512 KB |
Output is correct |
| 4 |
Correct |
3 ms |
1280 KB |
Output is correct |
| 5 |
Correct |
5 ms |
2816 KB |
Output is correct |
| 6 |
Correct |
4 ms |
1152 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
4 ms |
2176 KB |
Output is correct |
| 2 |
Correct |
4 ms |
1792 KB |
Output is correct |
| 3 |
Correct |
4 ms |
1664 KB |
Output is correct |
| 4 |
Correct |
2 ms |
384 KB |
Output is correct |
| 5 |
Correct |
54 ms |
43380 KB |
Output is correct |
| 6 |
Correct |
19 ms |
14208 KB |
Output is correct |
| 7 |
Correct |
88 ms |
67064 KB |
Output is correct |
| 8 |
Correct |
11 ms |
8064 KB |
Output is correct |
| 9 |
Correct |
11 ms |
8192 KB |
Output is correct |
| 10 |
Correct |
42 ms |
26360 KB |
Output is correct |
