Submission #1216481

#	Time	Username	Problem	Language	Result	Execution time	Memory
1216481		Ak_16	Chorus (JOI23_chorus)	C++20	0 / 100	0 ms	576 KiB

chorus

#include <bits/stdc++.h>
using namespace std;

int main(){
    int t,l,r,d;
    int ans[305][305];

    cin>>t;
    while(t--){
        cin>>l>>r>>d;

        for(int i=0; i<=r; i++){
            for(int j=0; j<=r; j++){
                ans[i][j] = 0;
            }
        }


        if(d==1){cout<<-1<<endl;}

    
        else if(d>=3) {
            cout<<r<<endl;

            int qu = (r-1)/d;
            int re = r-1 - d*qu;

            
               for(int i=1; i<=qu+re; i++){
                for(int j=i+1; j<=1+qu+re; j++){
                    ans[i][j] = 1;
                }
               }

               for(int i=qu+re+1; i<r; i++){
                for(int j=i+1; j<=min(r, i+qu); j++){
                    ans[i][j] = 1;
                }
               }

               for(int i=r; i>=1; i--){
                for(int j=i-1; j>=1; j--){
                    if(ans[j][i]==0){
                        ans[i][j] = 1;
                    }
                }
               }
            
           for(int i=1; i<=r; i++){
            for(int j=1; j<=r; j++){
                cout<<ans[i][j];
            }
            cout<<endl;
           }
            
            
        }

        else {
            if(l%2==1||r>l){
            int f;
            if(l%2==1){
                f = l;
            }
            else {f = l+1;}

              for(int i=0; i<f; i++){
                for(int j=i+1; j<=i+f/2; j++){
                    ans[i][j%f] = 1;
                }
            }

            cout<<f<<endl;
            for(int i=0; i<f; i++){
                for(int j=0; j<f; j++){
                    cout<<ans[i][j];
                }
                cout<<endl;
            }

            }

            else {
                if(l<=4){
                    cout<<-1<<endl;
                }
                else {
                    ans[1][5] = 1;
                    ans[1][6] = 1;
                    ans[2][1] = 1;
                    ans[2][6] = 1;
                    ans[3][1] = 1;
                    ans[3][2] = 1;
                    ans[3][5] = 1;
                    ans[4][1] = 1;
                    ans[4][2] = 1;
                    ans[4][3] = 1;
                    ans[5][2] = 1;
                    ans[5][4] = 1;
                    ans[6][3] = 1;
                    ans[6][4] = 1;
                    ans[6][5] = 1;

                    for(int i=8; i<=l; i+=2){
                        ans[i][i-1] = 1;
                        ans[i-1][i] = 0;
                        for(int j=1; j<=i-2; j++){
                            ans[j][i] = 1;
                            ans[i][j] = 0;
                            ans[i-1][j] = 1;
                            ans[j][i-1] = 0;
                        }
                    }

                    cout<<l<<endl;
                    for(int i=1; i<=l; i++){
                        for(int j=1; j<=l; j++){
                            cout<<ans[i][j];
                        }
                        cout<<endl;
                    }
                }


            }


        }
    }
    return 0;
}

• Subtask 1: 0 / 16
• Subtask 2: 0 / 24
• Subtask 3: 0 / 21
• Subtask 4: 0 / 26
• Subtask 5: 0 / 13