제출 #297900

#제출 시각아이디문제언어결과실행 시간메모리
297900Batyr커다란 상품 (IOI17_prize)C++17
0 / 100
96 ms1384 KiB
#include <bits/stdc++.h> #include "prize.h" using namespace std; #define pb push_back #define ss second #define ff first #define pii pair<int,int> #define mkp make_pair const int maxn=2e5+5; pii dp[maxn]; // vector<int> ask(int nd){ // return {1,2}; // } pii f(int l,int r){ if(dp[l] == mkp(0,0)){ vector<int>p = ask(l); dp[l].ff=p[0]; dp[l].ss=p[1]; } if(dp[r] == mkp(0,0)){ vector<int> p = ask(r); dp[r].ff=p[0]; dp[r].ss=p[1]; } if(dp[l].ff+dp[l].ss == dp[r].ff+dp[r].ss and dp[l].ss - dp[r].ss == 0) return {dp[l].ff + dp[l].ss,l}; pii cep=f(l,(l+r)/2); pii sag=f((l+r)/2,r); if(cep.ff < sag.ff) return cep; return sag; } int find_best(int n){ return f(0,n-1).ss; } // int main() { // cout<< find_best(4); // }
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