Submission #357658

#	Time	Username	Problem	Language	Result	Execution time	Memory
357658		mario05092929	Colors (BOI20_colors)	C++11	0 / 100	1 ms	364 KiB

Colors

#include <bits/stdc++.h>
#define x first
#define y second
#define pb push_back
#define all(v) v.begin(),v.end()
#pragma gcc optimize("O3")
#pragma gcc optimize("Ofast") 
#pragma gcc optimize("unroll-loops")
using namespace std;
const int INF = 1e9;
const int TMX = 1 << 18;
const long long llINF = 1e16;
const long long mod = 1e9+7;
const long long hashmod = 100003;
const int MAXN = 100000;
const int MAXM = 1000000;
typedef long long ll;
typedef long double ld;
typedef pair <int,int> pi;
typedef pair <ll,ll> pl;
typedef vector <int> vec;
typedef vector <pi> vecpi;
typedef long long ll;
int n,x,l,r;

int main() {
	ios_base::sync_with_stdio(false); cin.tie(0);
	cin >> n;
	l = 2, r = n,x = 1;
	for(int i = 1;i <= n;i++) {
		cout << "? " << x << endl;
		int val; cin >> val;
		if(i^1&&!val) {
			cout << "= " << n-i+2 << endl;
			return 0;
		}
		if(i % 2) x = r--;
		else x = l++;
	}
}

Compilation message (stderr)

Colors.cpp:6: warning: ignoring #pragma gcc optimize [-Wunknown-pragmas]
    6 | #pragma gcc optimize("O3")
      | 
Colors.cpp:7: warning: ignoring #pragma gcc optimize [-Wunknown-pragmas]
    7 | #pragma gcc optimize("Ofast")
      | 
Colors.cpp:8: warning: ignoring #pragma gcc optimize [-Wunknown-pragmas]
    8 | #pragma gcc optimize("unroll-loops")
      |

• Subtask 1: 0 / 9
• Subtask 2: 0 / 13
• Subtask 3: 0 / 21
• Subtask 4: 0 / 24
• Subtask 5: 0 / 33