Submission #1073414

#	Time	Username	Problem	Language	Result	Execution time	Memory
1073414		ProtonDecay314	Naval battle (CEOI24_battle)	C++17	6 / 100	36 ms	7116 KiB

Main

#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef vector<ll> vll;
typedef vector<vll> vvll;
typedef vector<int> vi;
typedef vector<vi> vvi;
typedef pair<ll, ll> pll;
typedef vector<pll> vpll;
typedef pair<int, int> pi;
typedef vector<pi> vpi;
typedef vector<bool> vb;
#define fi first
#define se second
#define IOS cin.tie(nullptr); cout.tie(nullptr); ios_base::sync_with_stdio(false)
#define pb push_back

struct ship {
    int x, y, d;
};

vpi dir = {{0, -1}, {1, 0}, {0, 1}, {-1, 0}};

typedef vector<ship> vs;

vi solve(int n, vs& s) {
    int linf = max(abs(s[0].x - s[1].x), abs(s[0].y - s[1].y));

    int s0x = s[0].x + dir[s[0].d].fi * linf;
    int s0y = s[0].y + dir[s[0].d].se * linf;
    int s1x = s[1].x + dir[s[1].d].fi * linf;
    int s1y = s[1].y + dir[s[1].d].se * linf;

    vi ans;

    if(s0x == s1x && s0y == s1y) return ans;
    else {
        ans.pb(1);
        ans.pb(2);
        return ans;
    } 
}

int main() {
    IOS;

    int n;
    cin >> n;

    vs s;

    for(int i = 0; i < n; i++) {
        int x, y;
        char d;

        cin >> x >> y;
        cin >> d;

        int dv;

        if(d == 'N') dv = 0;
        if(d == 'E') dv = 1;
        if(d == 'S') dv = 2;
        if(d == 'W') dv = 3;

        s.pb({x, y, dv});
    }

    vi ans = solve(n, s);

    for(int v : ans) {
        cout << v << "\n";
    }
    cout << flush;

    return 0;
}

Compilation message (stderr)

Main.cpp: In function 'int main()':
Main.cpp:66:13: warning: 'dv' may be used uninitialized in this function [-Wmaybe-uninitialized]
   66 |         s.pb({x, y, dv});
      |         ~~~~^~~~~~~~~~~~

• 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