Sudoku

#include <iostream>

using namespace std;

int t[9][9];
int main(){
    string s;
    cin >> s;
    for(int i=0; i<9; ++i){
        t[0][i]=s[i]-'0';
    }
    for(int k=0; k<9; k+=3){
        int a=0, b=0;
        for(int i=1; i<9; ++i){
            a+=3;
            if(i%3==0) ++b;
            for(int o=0; o<3; ++o) t[i][(k+a)%9+(b+o)%3]=t[0][k+o];
        }
    }for(int i=0; i<9; ++i) {
        for(int j=0; j<9; ++j) cout << t[i][j];
        cout << "\n";
    }

}

Test 1

Verdict: ACCEPTED

Test 2

Verdict: ACCEPTED

Test 3

Verdict: ACCEPTED

Test 4

Verdict: ACCEPTED

Test 5

Verdict: ACCEPTED