This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
#include "prize.h"
#include <bits/stdc++.h>
#define rep(i, n) for (int i = 0; i < (int)(n); ++i)
#define rep2(i, a, b) for (int i = (int)(a); i < (int)(b); ++i)
#define rrep(i, n) for (int i = (int)(n) - 1; i >= 0; --i)
#define rrep2(i, a, b) for (int i = (int)(b) - 1; i >= (int)(a); --i)
#define all(v) begin(v), end(v)
#define rall(v) rbegin(v), rend(v)
using namespace std;
using ll = long long;
template<class T, class U> bool chmin(T& a, const U& b) { return a > b ? a = b, true : false; }
template<class T, class U> bool chmax(T& a, const U& b) { return a < b ? a = b, true : false; }
vector<vector<int>> memo;
vector<int> Ask(int n) {
if (memo[n].empty()) memo[n] = ask(n);
return memo[n];
}
int find_best(int n) {
memo.resize(n);
int cnt = 0, x = 500;
rep (i, 500) {
auto res = Ask(i);
chmax(cnt, res[0] + res[1]);
if (res[0] + res[1] == 0) return i;
if (cnt >= 30) {
x = i + 1;
break;
}
}
while (x < n) {
int y = 0;
while (x < n) {
auto res = Ask(x);
if (res[0] + res[1] == 0) return x;
if (res[0] + res[1] == cnt) {
y = res[0];
break;
}
++x;
}
int ok = 0, ng = n;
while (ng - ok > 1) {
int mid = (ok + ng) / 2;
if (mid <= x) ok = mid;
else {
auto res = Ask(mid);
if (res[0] + res[1] == 0) return mid;
if (res[0] + res[1] < cnt) ng = mid;
else if (res[0] > y) ng = mid;
else ok = mid;
}
}
x = ok + 1;
}
}
Compilation message (stderr)
prize.cpp: In function 'int find_best(int)':
prize.cpp:63:1: warning: control reaches end of non-void function [-Wreturn-type]
63 | }
| ^
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