https://atcoder.jp/contests/abc393/tasks/abc393_d https://codeforces.me/problemset/problem/1520/E only you need to swap '1','*' and add while(t--)
Same problem on atcoder and cf
https://atcoder.jp/contests/abc393/tasks/abc393_d https://codeforces.me/problemset/problem/1520/E only you need to swap '1','*' and add while(t--)
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