dna.cpp: In function 'int get_distance(int, int)':
dna.cpp:15:20: error: expected unqualified-id before numeric constant
15 | int c[3][3]={},0;
| ^
dna.cpp:18:74: error: 'ans' was not declared in this scope; did you mean 'abs'?
18 | for(int i=0;i<3;i++)for(int j=i+1,sw;j<3;j++)sw=min(c[i][j],c[j][i]),ans+=sw;c[i][j]-=sw;c[j][i]-=sw;
| ^~~
| abs
dna.cpp:18:84: error: 'i' was not declared in this scope
18 | for(int i=0;i<3;i++)for(int j=i+1,sw;j<3;j++)sw=min(c[i][j],c[j][i]),ans+=sw;c[i][j]-=sw;c[j][i]-=sw;
| ^
dna.cpp:18:87: error: 'j' was not declared in this scope
18 | for(int i=0;i<3;i++)for(int j=i+1,sw;j<3;j++)sw=min(c[i][j],c[j][i]),ans+=sw;c[i][j]-=sw;c[j][i]-=sw;
| ^
dna.cpp:18:91: error: 'sw' was not declared in this scope
18 | for(int i=0;i<3;i++)for(int j=i+1,sw;j<3;j++)sw=min(c[i][j],c[j][i]),ans+=sw;c[i][j]-=sw;c[j][i]-=sw;
| ^~
dna.cpp:19:25: error: 'ans' was not declared in this scope; did you mean 'abs'?
19 | for(int i=0;i<3;i++)ans+=c[i][(i+1)%3]*2;
| ^~~
| abs
dna.cpp:20:12: error: 'ans' was not declared in this scope; did you mean 'abs'?
20 | return ans;
| ^~~
| abs