View Compilation Error

0_0_17864999_10975.cpp:4:1: error: stray '\243' in program
 int n, m；
 ^
0_0_17864999_10975.cpp:4:1: error: stray '\273' in program
0_0_17864999_10975.cpp:5:1: error: expected initializer before 'int'
 int x[MAXN], y[MAXN]; // x[i] means x-th row contains how much empty cells, y[i] means y-th column contains how much empty cells
 ^
0_0_17864999_10975.cpp: In function 'int main()':
0_0_17864999_10975.cpp:25:28: error: 'm' was not declared in this scope
         scanf("%d%d", &n, &m);
                            ^
0_0_17864999_10975.cpp:26:16: error: 'x' was not declared in this scope
         memset(x, 0, sizeof(x));
                ^
0_0_17864999_10975.cpp:27:16: error: 'y' was not declared in this scope
         memset(y, 0, sizeof(y));
                ^