제출 #1287835

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1287835		nikoloz-ch	선물 (IOI25_souvenirs)	C++20	25 / 100	13 ms	400 KiB

souvenirs

#include <bits/stdc++.h>
using namespace std;

pair<vector<int>, long long> transaction(long long M);

void buy_souvenirs(int N, long long P0){
    if(N == 2){
        auto pii = transaction(P0-1);
        return;
    } else if(N == 3){
        auto pii = transaction(P0-1);
        if(pii.first.size() == 2){
            auto p3 = transaction((P0-1-pii.second)/2);
            return;
        }
        auto p = transaction(P0-2-pii.second);
        auto p2 = transaction(P0-2-pii.second);
        return;
    } else{
        long long l1 = P0;
        vector<int> mp(N, 0);
        for(int i = 1; i < N; i++){
            bool tr = false;
            for(int j = 0; j < i; j++){
                if(l1 <= 1) return;
                auto pii = transaction(l1-1);
                for(auto t : pii.first) {
                    if(t >= 0 && t < N) mp[t]++;
                }
                if(pii.first.size() == 2) tr = true;
                if(pii.second == 1ll) tr = true;
                bool all_done = true;
                for(int k = 1; k < N; ++k) if(mp[k] < k){ all_done = false; break; }
                if(all_done) return;
            }
            if(tr) l1--;
            l1--;
            if(l1 < 1) l1 = 1;
        }
    }
}

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