/// source code (in typescript)

// // @kariay1975/atcoder-tslib is a private package: 
// import {
//   Input,
//   InputStdin,
//   sortAsNumber,
//   sumNumber,
// } from '@kariya1975/atcoder-tslib';
// // use babel-plugin-macros for speed.
// import {
//   range,
//   arrayWith,
// } from '@kariya1975/atcoder-tslib/macro';
// 
// 
// type int = number;
// 
// const nextPerm = (xs: int[]): boolean => {
//   const swap = (i: int, j: int): void => {
//     const t = xs[i];
//     xs[i] = xs[j];
//     xs[j] = t;
//   };
//   for (const i of range(xs.length - 2, -1, -1)) {
//     if (xs[i] >= xs[i + 1]) continue;
//     for (const j of range(xs.length -1, -1, -1)) {
//       if (xs[j] <= xs[i]) continue;
//       swap(i, j);
//       for (const k of range(xs.length - i - 1)) {
//         const l = i + 1 + k;
//         const m = xs.length - 1 - k;
//         if (l > m) break;
//         swap(l, m);
//       } 
//       break;
//     }
//     return true;
//   }
//   return false;
// };
// 
// const main = (input: Input, output: any[]): void => {
//   const [N, M] = input.getInts(2);
//   const A: int[][] = [];
//   for (const _ of range(N)) {
//     const a = input.getInts(N);
//     if (sumNumber(a) !== M) {
//       output.push(-1);
//       return;
//     }
//     A.push(a);
//   }
// 
//   const dfs = (i: int, perms: int[][]): int[][] | false => {
// // console.error(i, perms)
//     if (i === N) return perms;
//     const cs: int[] = [];
//     for (const j of range(N)) {
//       for (const _ of range(A[i][j])) cs.push(j);
//     }
//     do {
//       let ps: int[][] = [];
//       for (const p of perms) ps.push([...p]);
//       let ok = true;
//       for (const i of range(M)) {
//         if (ps[i].includes(cs[i])) {
//           ok = false;
//           break;
//         }
//         ps[i].push(cs[i]);
//       }
//       if (!ok) continue;
//       const result = dfs(i + 1, ps);
//       if (result !== false) return result; 
//     } while (nextPerm(cs));
//     return false;
//   };
// 
//   const result = dfs(0, arrayWith(M, () => []));
//   if (result === false) {
//     output.push(-1);
//   } else {
//     for (const p of result) {
//       output.push(p.map(x => x + 1).join(' '));
//     }
//   }
// };
// 
// const input = new InputStdin();
// input.setup().then(_ => {
//   const output = [];
//   main(input, output);
//   console.log(output.join('n'));
// });

// /// The code above transpiles as follows:
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