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链接：https://codeforces.com/problemset/problem/1419/D2 This is the hard version of the problem. The difference between the versions is that in the easy version all pricesaiaiare different. You can make hacks if and only if you solved both versions of the ..

链接：https://codeforces.ml/contest/1360/problem/G You are given four positive integersnn,mm,aa,bb(1≤b≤n≤501≤b≤n≤50;1≤a≤m≤501≤a≤m≤50). Find any such rectangular matrix of sizen×mn×mthat satisfies all of the following conditions: each row of the matr...

链接：https://codeforces.ml/contest/1323/problem/B You are given an arrayaaof lengthnnand arraybbof lengthmmboth consisting of only integers00and11. Consider a matrixccof sizen×mn×mformed ...

链接：https://codeforces.ml/contest/1316/problem/C It is Professor R's last class of his teaching career. Every time Professor R taught a class, he gave a special problem for the students to solve. You ...

链接：https://codeforces.com/contest/1244/problem/G Demonstrative competitions will be held in the run-up to the20NN20NNBerlatov Olympic Games. Today is the day for the running competition! Berlatov ...