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task07-transform.c
104 lines (91 loc) · 1.41 KB
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task07-transform.c
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/*
ID: zltsang1
LANG: C
TASK: transform
*/
#include <stdio.h>
int nt;
char pbf[10][10]={0},paf[10][10]={0},pt[10][10]={0},pt2[10][10]={0};
void ref(){
int i,j;
char t;
for(i=0;i<nt;i++){
for(j=0;j<nt/2;j++){
t=pt[i][j];pt[i][j]=pt[i][nt-j-1];pt[i][nt-j-1]=t;
}
}
}
int ide(){
int i,j;
for(i=0;i<nt;i++){
for(j=0;j<nt;j++){
if(paf[i][j]!=pt[i][j])return 0;
}
}
return 1;
}
void rot90(int t){
int i,j,k;
for(k=0;k<t;k++){
for(i=0;i<nt;i++){
for(j=0;j<nt;j++){
pt2[j][nt-1-i]=pt[i][j];
}
}
for(i=0;i<nt;i++){
for(j=0;j<nt;j++){
pt[i][j]=pt2[i][j];
}
}
}
}
void cpy(){
int i,j;
for(i=0;i<nt;i++){
for(j=0;j<nt;j++){
pt[i][j]=pbf[i][j];
}
}
}
main () {
FILE *fin = fopen ("transform.in", "r");
FILE *fout = fopen ("transform.out", "w");
int a, b;
int i,j,k;
char ln[10];
fscanf (fin, "%d", &nt);
for(i=0;i<nt;i++){
fscanf(fin, "%s", ln);
for(j=0;j<nt;j++)pbf[i][j]=ln[j];
}
for(i=0;i<nt;i++){
fscanf(fin, "%s", ln);
for(j=0;j<nt;j++)pt[i][j]=paf[i][j]=ln[j];
}
for(k=1;k<4;k++){
cpy();
rot90(k);
if(ide()){
fprintf (fout, "%d\n", k);exit(0);
}
}
cpy();
ref();
if(ide()){
fprintf (fout, "%d\n", 4);exit(0);
}
for(k=1;k<4;k++){
cpy();
ref();
rot90(k);
if(ide()){
fprintf (fout, "%d\n", 5);exit(0);
}
}
cpy();
if(ide()){
fprintf (fout, "%d\n", 6);exit(0);
}
fprintf (fout, "%d\n", 7);
exit (0);
}