이 제출은 이전 버전의 oj.uz에서 채점하였습니다. 현재는 제출 당시와는 다른 서버에서 채점을 하기 때문에, 다시 제출하면 결과가 달라질 수도 있습니다.
#include<bits/stdc++.h>
#include "prize.h"
using namespace std;
#define INF 1e9
#define MAX 100005
#define xx first
#define yy second
#define pb push_back
#define mp make_pair
#define ull long long
#define FOR(i,a,b) for(int i=a;i<=b;i++)
#define nl '\n'
#define zai <<' '<<
#define all(a) a.begin(),a.end()
#define pc __builtin_popcount
#define debug(args...) cerr << #args << " = "; Dbg,args; cerr << nl;
struct Dbg { template<typename T> Dbg& operator,(const T& v) { cerr << v << ", "; return *this; } } Dbg;
template <typename T> ostream& operator<<(ostream& _o_, const vector<T>& _v_){
if(!_v_.empty()){_o_<<'[';copy(_v_.begin(),_v_.end(),ostream_iterator<T>(_o_,", "));_o_<<"\b\b]";}return _o_;}
typedef vector<int> vi;
typedef pair<int,int> ii;
typedef vector<ii> vii;
template<class C> void mini(C &_a, C _b) { _a = min(_a, _b); }
template<class C> void maxi(C &_a, C _b) { _a = max(_a, _b); }
struct val{
int L, R;
};
map<int, val> mymap;
int mx = 0;
vii possiblities;
val optimized_ask(int i){
if(mymap.find(i) == mymap.end()){
vector<int> tmp = ask(i);
val q;
q.L = tmp[0];
q.R = tmp[1];
return mymap[i] = q;
}
else{
return mymap[i];
}
}
void solve(int l, int r, val LV, val RV){
if(l > r)return;
if(l == r){
possiblities.pb({LV.L + LV.R, l});
return;
}
int mid = (l + r) >> 1;
val MV = optimized_ask(mid);
if(MV.L + MV.R != mx){
possiblities.pb({MV.L + MV.R,mid});
solve(l, mid - 1, LV, optimized_ask(mid - 1));
solve(mid + 1, r, optimized_ask(mid + 1), RV);
}
else{
solve(l, mid, LV, MV);
solve(mid, r, MV, RV);
}
}
int find_best(int n){
val first = optimized_ask(0);
mx = first.L + first.R;
if(mx == 0)return 0;
solve(0, n - 1, optimized_ask(0), optimized_ask(n - 1));
for(auto x : possiblities){
if(x.first == 0){
return x.second;
}
}
}
컴파일 시 표준 에러 (stderr) 메시지
prize.cpp: In function 'int find_best(int)':
prize.cpp:78:1: warning: control reaches end of non-void function [-Wreturn-type]
}
^
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