View Compilation Error

0_0_16772315_20743.cpp:50:8: error: 'N' was not declared in this scope
 char s[N];
        ^
0_0_16772315_20743.cpp:51:9: error: 'N' was not declared in this scope
 int ans[N][N];
         ^
0_0_16772315_20743.cpp:51:12: error: 'N' was not declared in this scope
 int ans[N][N];
            ^
0_0_16772315_20743.cpp: In function 'int main()':
0_0_16772315_20743.cpp:66:21: error: 's' was not declared in this scope
         scanf("%s", s + 1);
                     ^
0_0_16772315_20743.cpp:72:17: error: 'ans' was not declared in this scope
                 ans[i][j] = A.tot;
                 ^
0_0_16772315_20743.cpp:81:28: error: 'ans' was not declared in this scope
             printf("%d\n", ans[l][r] - 2);
                            ^