Submission #1158976

#	Time	Username	Problem	Language	Result	Execution time	Memory
1158976		Tyx2019	Light Bulbs (EGOI24_lightbulbs)	C++20	0 / 100	0 ms	576 KiB

Main

#include <bits/stdc++.h>
#define int long long
using namespace std;
const int maxN = 105;
int N;
int qrything[maxN][maxN];
void add(int i, int j){
    qrything[i][j] = 1;
}
int ask(){
    cout << "?\n";
    for(int i=1;i<=N;i++){
        for(int j=1;j<=N;j++) cout << qrything[i][j];
        cout << endl;
    }
    memset(qrything, 0, sizeof(qrything));
    int k;
    cin >> k;
    return k;
}
vector<int> unfoundrow, unfoundcol;
vector<int> foundrow, foundcol;
int rowguy[maxN];
int colguy[maxN];
void rowfound(int row, int col){
    rowguy[row] = col;
    auto it = find(unfoundrow.begin(), unfoundrow.end(), row);
    unfoundrow.erase(it);
    foundrow.push_back(row);
}
void colfound(int col, int row){
    rowguy[col] = row;
    auto it = find(unfoundcol.begin(), unfoundcol.end(), col);
    unfoundcol.erase(it);
    foundcol.push_back(col);
}
bool get(int a, int b){
    add(1, a);
    add(1, b);
    int res = ask();
    if(res == N){
        rowfound(1, a);
        return 1;
    }
    else if(res == 2 * N){
        colfound(a, 1);
        colfound(b, 1);
        return 1;
    }
    return 0;
}

main(){
    cin >> N;
    unfoundrow.clear();
    unfoundcol.clear();
    foundrow.clear();
    foundcol.clear();
    memset(rowguy, -1, sizeof(rowguy));
    memset(colguy, -1, sizeof(colguy));
    for(int i=1;i<=N;i++){
        unfoundrow.push_back(i);
        unfoundcol.push_back(i);
    }
    if(!get(1, 2)){
        if(!get(2, 3)){
            if(!get(1, 3)) assert(false);
        }
    }
    while(!unfoundcol.empty() && !unfoundrow.empty()){
        int c = unfoundcol[0];
        int r = unfoundrow[0];
        if(!foundcol.empty()){
            add(r, c);
            add(colguy[foundcol[0]], foundcol[0]);
            int res = ask();
            if(res == 2*N){
                colfound(c, r);
            }
            else{
                rowfound(r, c);
            }
        }
        else{
            add(r, c);
            add(foundrow[0], rowguy[foundrow[0]]);
            int res = ask();
            if(res == 2*N-1){
                colfound(c, r);
            }
            else{
                rowfound(r, c);
            }
        }
    }
    cout << "!\n";
    int res[maxN][maxN];
    memset(res, 0, sizeof(res));
    if(unfoundcol.empty()){
        for(int i=1;i<=N;i++) res[colguy[i]][i] = 1;
    }
    else{
        for(int i=1;i<=N;i++) res[i][rowguy[i]] = 1;
    }
    for(int i=1;i<=N;i++){
        for(int j=1;j<=N;j++) cout << i << " "  << j << '\n';
    }
}

Compilation message (stderr)

Main.cpp:53:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   53 | main(){
      | ^~~~

• Subtask 1: 0 / 11
• Subtask 2: 0 / 11
• Subtask 3: 0 / 78