結果

問題 No.3018 目隠し宝探し
ユーザー YFYF
提出日時 2025-01-25 15:19:51
言語 C++17
(gcc 13.3.0 + boost 1.87.0)
結果
AC  
実行時間 82 ms / 2,000 ms
コード長 2,259 bytes
コンパイル時間 4,468 ms
コンパイル使用メモリ 256,704 KB
実行使用メモリ 25,972 KB
平均クエリ数 2.73
最終ジャッジ日時 2025-01-25 23:44:19
合計ジャッジ時間 7,744 ms
ジャッジサーバーID
(参考情報)
judge13 / judge7
このコードへのチャレンジ
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ファイルパターン 結果
sample AC * 1
other AC * 21
権限があれば一括ダウンロードができます
コンパイルメッセージ
main.cpp: In function ‘int main()’:
main.cpp:50:33: warning: ‘second_x’ may be used uninitialized [-Wmaybe-uninitialized]
   50 |     cout << "? " << second_x << " " << second_y << endl;
      |                                 ^~~
main.cpp:42:9: note: ‘second_x’ was declared here
   42 |     int second_x,second_y;
      |         ^~~~~~~~
main.cpp:50:40: warning: ‘second_y’ may be used uninitialized [-Wmaybe-uninitialized]
   50 |     cout << "? " << second_x << " " << second_y << endl;
      |                                        ^~~~~~~~
main.cpp:42:18: note: ‘second_y’ was declared here
   42 |     int second_x,second_y;
      |                  ^~~~~~~~

ソースコード

diff #

#include <bits/stdc++.h>
#include <atcoder/all>
using namespace std;
using namespace atcoder;
#define rep(i, n) for (int i = 0; i < (int)(n); i++)
template <typename T> inline bool chmax(T& a, T b) { if (a < b) { a = b; return true; } return false; }
template <typename T> inline bool chmin(T& a, T b) { if (a > b) { a = b; return true; } return false; }

int main() {
    double H,W;
    cin >> H >> W;
    if(H == 1 && W == 1){
        cout << "! 1 1" << endl;
        return 0;
    }

    cout << "? 1 1" << endl;

    double a;
    cin >> a;
    if(a == 0)cout << "! 1 1" << endl;
    // a = sqrt(a);

    vector<vector<bool>> res(H,vector<bool>(W,true));

    int counter = H * W;
    rep(i,H)rep(j,W){
        if(i*i+j*j - a != 0){
            res[i][j] = false;
            counter--;
        }
    }
    if(counter == 1){
        rep(i,H)rep(j,W){
            if(res[i][j]){
                cout << "! " << i+1 << " " << j+1 << endl;
            return 0;
            }
        }
    }

    int second_x,second_y;
    rep(i,H)rep(j,W){
        if(res[i][j]){
            second_x = i + 1;
            second_y = j + 1;
        }
    }

    cout << "? " << second_x << " " << second_y << endl;

    cin >> a;
    if(a == 0)cout << "! " << second_x << " " << second_y << endl;
    // a = sqrt(a);

    rep(i,H)rep(j,W){
        if(((second_x-i-1)*(second_x-i-1) + (second_y-j-1) * (second_y-j-1) - a != 0) && (res[i][j] == true)){
            res[i][j] = false;
            counter--;
        }
    }


    if(counter == 1){
        // cout << counter << endl;
        rep(i,H)rep(j,W){
            if(res[i][j]){
                
                cout << "! " << i+1 << " " << j+1 << endl;
            return 0;
            }
        }
    }else{
        vector<pair<int,int>> candidateList;
        rep(i,H)rep(j,W){
            if(res[i][j])candidateList.push_back({i+1,j+1});
        }

        // cout << candidateList.size() << endl;

        cout << "? " << candidateList[0].first << " " << candidateList[0].second << endl;

        cin >> a;
        if(a)cout << "! " << candidateList[1].first << " " << candidateList[1].second << endl;
        else cout << "! " << candidateList[0].first << " " << candidateList[0].second << endl;
    }







}
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