Submission #648221

#	Time	Username	Problem	Language	Result	Execution time	Memory
648221		rafatoa	The Big Prize (IOI17_prize)	C++17	100 / 100	53 ms	336 KiB

prize

#include <bits/stdc++.h>
using namespace std;
typedef long long int ll;
typedef long double ld;
#pragma GCC optimize ("Ofast")

#define double ld
const int inf = 2e9;
const int INF = 4e18;

#define F first
#define S second
#define vi vector<int>
#define vvi vector<vi>
#define pi pair<int, int>
#define vpi vector<pi>
#define vb vector<bool>
#define vvb vector<vb>
#define pb push_back
#define read(a) for(auto &x:a) cin >> x;
#define print(a) for(auto x:a) cout << x << " "; cout << "\n";
#define rs resize
#define as assign
#define vc vector<char>
#define vvc vector<vc>
#define all(x) x.begin(), x.end()
#define rall(x) x.rbegin(), x.rend()

#define ppb pop_back
#define MP make_pair

//#define int ll
const int mod = 1e9+7;

vi ask(int i);

int find_best(int n){
    int ans = -1;
    function<void(int, int, vi, vi)> dfs = [&](int l, int r, vi L, vi R){
        if(ans != -1 || l+1 >= r || L == R) return;

        int mid = (l+r)/2;
        vi M = ask(mid);
        if(M[0]+M[1] == 0){
            ans = mid;
            return;
        }

        if(L[0]+L[1] == R[0]+R[1] && L[0]+L[1] > M[0]+M[1] && L[1]-R[1] == 1) return;
        dfs(l, mid, L, M); dfs(mid, r, M, R);
    };

    vi L = ask(0);
    if(L[0]+L[1] == 0) return 0;

    vi R = ask(n-1);
    if(R[0]+R[1] == 0) return n-1;

    dfs(0, n-1, L, R);
    return ans;
}

// signed main(){
//     ios_base::sync_with_stdio(0);
//     cin.tie(0);

//     #ifndef ONLINE_JUDGE
//         freopen("in.txt", "r", stdin);
//         freopen("out.txt", "w", stdout);
//     #endif

//     solve();
//     return 0;
// }

Compilation message (stderr)

prize.cpp:9:17: warning: overflow in conversion from 'double' to 'int' changes value from '4.0e+18' to '2147483647' [-Woverflow]
    9 | const int INF = 4e18;
      |                 ^~~~

• Subtask 1: 20 / 20
• Subtask 2: 80 / 80