Submission #1094665

#	Time	Username	Problem	Language	Result	Execution time	Memory
1094665		_unknown_2010	Colors (BOI20_colors)	C++17	0 / 100	1 ms	348 KiB

Colors

//#ifndef LOCAL
//#pragma GCC optimize ("Ofast")
//#pragma GCC optimize ("unroll-loops")
//#endif

#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace std;
using namespace __gnu_pbds;
template<typename T> using ordered_set = tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;
template<typename T> using indexed_multiset = tree<T, null_type, less_equal<T>, rb_tree_tag, tree_order_statistics_node_update>;
#define vecm(a,n,m) vector<vector<int>>a(n,vector<int>(m,0));
#define int int64_t
#define pii pair<int,int>
#define vi vector
#define vii vector<pii>
#define mpii map<int,int>
#define lb lower_bound
#define ub upper_bound
#define foor(i,a,b) for(int i=a;i<b; i++)
#define foor(i,a) foor(i,0,a)
#define ss second
#define ff first
#define ln(x) int(x.size())
#define all(x) (x).begin(), (x).end()
#define seea(a,n) for(int i=0;i<n;i++){cin>>a[i];}
const int mod = 1E9+7;
const int MAXN=200000;
const int inf=1e18;
const int LOG=21;
void solution(){
    int n;
    cin >> n;
    int l=1,r=n;
    while(l<r){
        int mid=(l+r)/2;
        cout << "? " << 1 << endl;
        int a,b;
        cin >> a;
        cout << "? " << mid+1 << endl;
        cin >> b;
        if(b)r=mid;
        else l=mid+1;
    }
    cout << "= " << l << endl;
}
int32_t main(){
    clock_t tStart = clock();
    std::ios::sync_with_stdio(0); cin.tie(0); cout.tie(0);
    int q = 1; // cin >> q;
    while(q--) {
        solution();
        cout << '\n';
    }
    cerr<<fixed<<setprecision(3)<<"\nTime Taken: "<<(double)(clock()- tStart)/CLOCKS_PER_SEC << " ms" << endl;
}
/*

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██║░██╔╝██║░░██║██╔══██╗██╔════╝░░░░░░██╔══██╗░████║░░██╔══██╗
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██╔═██╗░██╔══██║██║░░██║░╚═══██╗╚════╝██║░░██║╚═╝██║░░░╚═══██║
██║░╚██╗██║░░██║╚█████╔╝██████╔╝░░░░░░╚█████╔╝███████╗░█████╔╝
╚═╝░░╚═╝╚═╝░░╚═╝░╚════╝░╚═════╝░░░░░░░░╚════╝░╚══════╝░╚════╝░
*/

Compilation message (stderr)

Colors.cpp:22: warning: "foor" redefined
   22 | #define foor(i,a) foor(i,0,a)
      | 
Colors.cpp:21: note: this is the location of the previous definition
   21 | #define foor(i,a,b) for(int i=a;i<b; i++)
      |

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