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OI-codes/Luogu/P1205/P1205.cpp

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// R36572888
#include<bits/stdc++.h>
using namespace std;
struct Matrix {
int map[12][12];
int n;
} from, to;
bool transform1(const Matrix& in) { // Right 90
for (int i = 1; i <= in.n; i++) {
for (int j = 1; j <= in.n; j++) {
if (in.map[i][j] != to.map[j][in.n - i + 1]) {
return 0;
}
}
}
return 1;
}
bool transform2(const Matrix& in) { // Right 180
for (int i = 1; i <= in.n; i++) {
for (int j = 1; j <= in.n; j++) {
if (in.map[i][j] != to.map[in.n - i + 1][in.n - j + 1]) {
return 0;
}
}
}
return 1;
}
bool transform3(const Matrix& in) { // Right 270
for (int i = 1; i <= in.n; i++) {
for (int j = 1; j <= in.n; j++) {
if (in.map[i][j] != to.map[in.n - j + 1][i])
return 0;
}
}
return 1;
}
bool transform4(const Matrix& in) { // Reflect
for (int i = 1; i <= in.n; i++) {
for (int j = 1; j <= in.n; j++) {
if (in.map[i][j] != to.map[i][in.n - j + 1])
return 0;
}
}
return 1;
}
bool transform5(const Matrix& in) {
Matrix tmp;
tmp.n = in.n;
for (int i = 1; i <= in.n; i++) {
for (int j = 1; j <= in.n; j++) {
tmp.map[i][j] = in.map[i][in.n - j + 1];
}
}
return (transform1(tmp) || transform2(tmp) || transform3(tmp));
}
bool transform6(const Matrix& in) {
for (int i = 1; i <= in.n; i++) {
for (int j = 1; j < in.n; j++) {
if (in.map[i][j] != to.map[i][j])
return 0;
}
}
return 1;
}
int main() {
scanf("%d", &from.n);
to.n = from.n;
string tmp;
getline(cin, tmp);
for (int i = 1; i <= from.n; i++) {
getline(cin, tmp);
for (int j = 0; j < from.n; j++)
from.map[i][j + 1] = tmp[j];
}
for (int i = 1; i <= to.n; i++) {
getline(cin, tmp);
for (int j = 0; j < to.n; j++)
to.map[i][j + 1] = tmp[j];
}
if (transform1(from) == 1) {
printf("1");
exit(0);
}
if (transform2(from) == 1) {
printf("2");
exit(0);
}
if (transform3(from) == 1) {
printf("3");
exit(0);
}
if (transform4(from) == 1) {
printf("4");
exit(0);
}
if (transform5(from) == 1) {
printf("5");
exit(0);
}
if (transform6(from) == 1) {
printf("6");
exit(0);
}
printf("7");
return 0;
}