# 【題解】ZeroJudge e601: 00255 – Correct Move

```#include <iostream>
using namespace std;

int K, Q, N, kx, ky, qx, qy, nx, ny;

int main() {
while (cin >> K >> Q >> N){
if (K == Q){
cout << "Illegal state\n";
continue;
}
kx = K / 8;
ky = K % 8;
qx = Q / 8;
qy = Q % 8;
nx = N / 8;
ny = N % 8;
if (qy!=ny && qx!=nx){
cout << "Illegal move\n";
continue;
}
if (Q == N || K == N){
cout << "Illegal move\n";
continue;
}
if (qy==ny && ny==ky){
if (qx > nx && kx < qx && kx >= nx){
cout << "Illegal move\n";
continue;
}
if (qx < nx && kx > qx && kx <= nx){
cout << "Illegal move\n";
continue;
}
}
else if (qx==nx && nx==kx){
if (qy > ny && ky < qy && ky >= ny){
cout << "Illegal move\n";
continue;
}
if (qy < ny && ky > qy && ky <= ny){
cout << "Illegal move\n";
continue;
}
}
if ((abs(nx-kx)==1 && ny==ky) || (nx==kx && abs(ny-ky)==1)){
cout << "Move not allowed\n";
continue;
}
bool flag = false;
if (kx+1 < 8 && kx+1 != nx && ky != ny) flag = true;
if (kx-1 >= 0 && kx-1 != nx && ky != ny) flag = true;
if (ky+1 < 8 && kx != nx && ky+1 != ny) flag = true;
if (ky-1 >= 0 && kx != nx && ky-1 != ny) flag = true;
if (flag) cout << "Continue\n";
else cout << "Stop\n";
}
}
```

Python code (credit: Amy Chou)

```while True:
try:
K, Q, N = map(int, input().strip().split())

if (K == Q):
print("Illegal state")
continue

kx = K // 8
ky = K % 8
qx = Q // 8
qy = Q % 8
nx = N // 8
ny = N % 8

if (qy != ny) and (qx != nx):
print("Illegal move")
continue

if (Q == N) or (K == N):
print("Illegal move")
continue

if (qy == ny) and (ny == ky):
if (qx > nx) and (kx < qx) and (kx >= nx):
print("Illegal move")
continue

if (qx < nx) and (kx > qx) and (kx <= nx):
print("Illegal move")
continue
elif (qx == nx) and (nx == kx):
if (qy > ny) and (ky < qy) and (ky >= ny):
print("Illegal move")
continue
if (qy < ny) and (ky > qy) and (ky <= ny):
print("Illegal move")
continue

if (((abs(nx-kx)==1) and (ny==ky)) or ((nx==kx) and (abs(ny-ky)==1))):
print("Move not allowed")
continue

flag = False
if (kx+1 < 8) and (kx+1 != nx) and (ky != ny):
flag = True
if (kx-1 >= 0) and (kx-1 != nx) and (ky != ny):
flag = True
if (ky+1 < 8) and (kx != nx) and (ky+1 != ny):
flag = True
if (ky-1 >= 0) and (kx != nx) and (ky-1 != ny):
flag = True
if flag:
print("Continue")
else:
print("Stop")
except:
break
```