Submission #779390

#	Time	Username	Problem	Language	Result	Execution time	Memory
779390		teamariaa	Aliens (IOI07_aliens)	C++17	Compilation error	0 ms	0 KiB

aliens

#include <bits/stdc++.h>

using namespace std;

int n, m, x, y, ansx, ansy, st1, dr1, st2, dr2;

bool examine(int x, int y)
{
    string s;
    if(x > n  ||  x < 1  ||  y > n  ||  y < 1)
        return 0;
    cout << "examine " << x << " " << y << endl;
    cin >> s;
    if(s == "true")
        return 1;
    return 0;
}

void output(int a, int b)
{
    cout << a << " " << b << endl;
    int xCenter = x - st1 + m / 2;
    int yCenter = y - st2 + m / 2;
    cout << xCenter + (3 - a) * m << " " << yCenter + (3 - b) * m << endl;
    return 0;
}

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

    cin >> n >> x >> y;

    string s;
    bool isSet = 1;
    for(int i = x + 1; i <= n  &&  isSet; i ++)
    {
        isSet = examine(i, y);
        dr1 += isSet;
    }

    isSet = 1;
    for(int i = x - 1; i >= 1  &&  isSet; i --)
    {
        isSet = examine(i, y);
        st1 += isSet;
    }
    m = st1 + dr1 + 1;

    ///
    isSet = 1;
    for(int i = y + 1; i <= n  &&  isSet; i ++)
    {
        isSet = examine(x, i);
        dr2 += isSet;
    }

    st2 = m - dr2 - 1;

    bool idk1, idk2, idk3, idk4, idk5, idk6, idk7, idk8;
    idk1 = examine(x + 2 * m, y);
    idk2 = examine(x + 4 * m, y);
    idk3 = examine(x - 2 * m, y);
    idk4 = examine(x - 4 * m, y);
    idk5 = examine(x, y + 2 * m);
    idk6 = examine(x, y + 4 * m);
    idk7 = examine(x, y - 2 * m);
    idk8 = examine(x, y - 4 * m);

    if(idk1  &&  idk2)
    {
        //x : 1
        if(idk5  &&  idk6)
            output(1, 1);
        else if(idk5  &&  idk6 == 0)
            output(1, 3);
        else if(idk5 == 0  &&  idk6 == 0)
            output(1, 5);
    }
    else if(idk1  &&  idk2 == 0)
    {
        //x : 2 3
        if(idk3)
        {
            //x : 3
            if(idk5  &&  idk6)
                output(3, 1);
            else if(idk5  &&  idk6 == 0)
                output(3, 3);
            else if(idk5 == 0  &&  idk6 == 0)
                output(3, 5);
        }
        else
        {
            //x : 2
            if(idk5)
                output(2, 2);
            else
                output(2, 4);
        }
    }
    else if(idk1 == 0  &&  idk2 == 0)
    {
        //x : 4 5
        if(idk4)
        {
            if(idk5  &&  idk6)
                output(5, 1);
            else if(idk5  &&  idk6 == 0)
                output(5, 3);
            else if(idk5 == 0  &&  idk6 == 0)
                output(5, 5);
            //x : 5
        }
        else
        {
            //x : 4
            if(idk7)
                output(4, 4);
            else
                output(4, 2);
        }
    }
}

Compilation message (stderr)

aliens.cpp: In function 'void output(int, int)':
aliens.cpp:25:12: error: return-statement with a value, in function returning 'void' [-fpermissive]
   25 |     return 0;
      |            ^