Submission #1264294

#TimeUsernameProblemLanguageResultExecution timeMemory
1264294anangoSouvenirs (IOI25_souvenirs)C++20
4 / 100
0 ms412 KiB
#include "souvenirs.h" #include <utility> #include <vector> #include <bits/stdc++.h> #define int long long using namespace std; void buy_souvenirs(int32_t N, long long P0) { //let's say that you start by doing P[0]-1 //this guarantees that you buy the first souvenir //then you can repeat the same process with the rest of the souvenirs //ok so our method is //start with P[0]-1 //then let S be the set of bought souvenirs //take the average of S (it's known from the given info) //transaction based on this //then say the first souvenir bought is i, it means that from 1 to i-1 the souvenirs are more than S //and from i to N-1 the souvenirs are less than S //solve i to N-1 recursively with the same process //and then solve 1 to i-1 also recursively using the info from i to N-1 //and then once we know all the values we can do the required transactions with full information //N=2 sol pair<vector<int32_t>, long long> res = transaction(P0-1); return; }
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