Submission #1026353

#	Time	Username	Problem	Language	Result	Execution time	Memory
1026353		12345678	Naval battle (CEOI24_battle)	C++17	6 / 100	2 ms	856 KiB

Main

#include <bits/stdc++.h>

using namespace std;

const int nx=5e3+5;

int n, x[nx], y[nx];
char dr[nx];

bool crash(int i, int j)
{
    if (dr[i]==dr[j]) return 0;
    if ((dr[i]=='N'&&dr[j]=='S')||(dr[i]=='S'&&dr[j]=='N')) 
    {
        if (x[i]==x[j]) return !(abs(y[i]-y[j])%2);
        else return 0;
    }
    if ((dr[i]=='W'&&dr[j]=='E')||(dr[i]=='E'&&dr[j]=='W')) 
    {
        if (y[i]==y[j]) return !(abs(y[i]-y[j])%2);
        else return 0;
    }
    if (dr[i]=='N')
    {
        if (dr[j]=='W'&&y[i]>y[j]&&y[i]-y[j]==x[j]-x[i]) return 1;
        if (dr[j]=='E'&&y[i]>y[j]&&y[i]-y[j]==x[i]-x[j]) return 1;
    }
    if (dr[i]=='S')
    {
        if (dr[j]=='W'&&y[i]<y[j]&&y[j]-y[i]==x[j]-x[i]) return 1;
        if (dr[j]=='E'&&y[i]<y[j]&&y[j]-y[i]==x[i]-x[j]) return 1;
    }
    if (dr[j]=='N')
    {
        if (dr[i]=='W'&&y[j]>y[i]&&y[j]-y[i]==x[i]-x[j]) return 1;
        if (dr[i]=='E'&&y[j]>y[i]&&y[j]-y[i]==x[j]-x[i]) return 1;
    }
    if (dr[j]=='S')
    {
        if (dr[i]=='W'&&y[j]<y[i]&&y[i]-y[j]==x[i]-x[j]) return 1;
        if (dr[i]=='E'&&y[j]<y[i]&&y[i]-y[j]==x[j]-x[i]) return 1;
    }
    return 0;
}

int main()
{
    cin.tie(NULL)->sync_with_stdio(false);
    cin>>n;
    for (int i=1; i<=n; i++) cin>>x[i]>>y[i]>>dr[i];
    //for (int i=1; i<=n; i++) for (int j=i+1; j<=n; j++) cout<<i<<' '<<j<<' '<<crash(i, j)<<'\n';
    if (!crash(1, 2)) cout<<1<<'\n'<<2;
}

• Subtask 0: 0 / 0
• Subtask 1: 6 / 6
• Subtask 2: 0 / 12
• Subtask 3: 0 / 8
• Subtask 4: 0 / 11
• Subtask 5: 0 / 9
• Subtask 6: 0 / 30
• Subtask 7: 0 / 24