text: Cases to find minimum number of digits to be removed
code: if ( sum == 0 ) { cout << 0 << ' ▁ ' ; } if ( sum == 1 ) { if ( one && N > 1 ) cout << 1 << ' ▁ ' ; else if ( two > 1 && N > 2 ) cout << 2 << ' ▁ ' ; else cout << -1 << ' ▁ ' ; } if ( sum == 2 ) { if ( two && N > 1 ) cout << 1 << ' ▁ ' ; else if ( one > 1 && N > 2 ) cout << 2 << ' ▁ ' ; else cout << -1 << ' ▁ ' ; }