제출 #1103657

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1103657		TVSown	Naval battle (CEOI24_battle)	C++17	6 / 100	3051 ms	6736 KiB

Main

///*** Sown_Vipro ***///
/// ->GIAI BA QUOC GIA<- ///

#include<bits/stdc++.h>
using namespace std;
//#pragma GCC optimize ("O3")
//#pragma GCC optimize ("unroll-loops")
//#pragma GCC target("popcnt")
#define F first
#define S second
#define pb push_back
#define pi pair<int, int>
#define pii pair<int, pair<int, int> >
#define FOR(i, a, b) for(int i = a; i <= b; ++i)
#define REP(i, a, b) for(int i = a; i >= b; --i)
#define inp(name) if(fopen(name, "r")) freopen(name, "r", stdin);
#define out(name) if(fopen(name, "w")) freopen(name, "w", stdout);
#define szz(s) int(s.size())
const int N = 1e6 + 5, MAX = 1e6, oo = 1e9 + 5, MOD = 1e9 + 7;
int n;
int d[N];
struct node{
    int x, y, t;
} p[N];

pi Find(node a, node b){
    int l = a.y, r = (a.t == 1 ? oo : 0);
    if(l > r) swap(l, r);
//    cout << l << " " << r << "\n";
    if(l <= b.y && b.y <= r) return {a.x, b.y};
    return {-1, -1};
}

int check(node a, node b){
    if(a.t == b.t) return 0;

    if(a.t > b.t) swap(a, b);
//    cout << a.x << " " << a.y << " " << a.t << "\n";
//    cout << b.x << " " << b.y << " " << b.t << "\n";
    if(a.t == 1 && b.t == 2) return (a.x == b.x && a.y <= b.y);
    if(a.t == 3 && b.t == 4) return (a.y == b.y && a.x <= b.x);

    pi g = Find(a, b);
    if(g.F == -1) return 0;
//    cout << g.F << " " << g.S << "\n";
    return abs(b.x - g.F) == abs(a.y - g.S);
}

void solve(){
    cin >> n;
    FOR(i, 1, n){
        char t;
        cin >> p[i].x >> p[i].y >> t;
        if(t == 'S') p[i].t = 1;
        if(t == 'N') p[i].t = 2;
        if(t == 'E') p[i].t = 3;
        if(t == 'W') p[i].t = 4;
    }

//    cout << check(p[1], p[7]);
    FOR(i, 1, n){
        FOR(j, 1, i - 1){
            if(check(p[i], p[j])){
//                cout << i << " " << j << "\n";
                d[i] = d[j] = 1;
            }
        }
    }
//    int c = 0;
    FOR(i, 1, n) if(!d[i]) cout << i << " ";
//    if(!c) cout << 0;
}

signed main(){
    ios_base::sync_with_stdio(false);
    cin.tie(0); cout.tie(0);
    inp("in.txt");
    int t = 1;
//    cin >> t;
    while(t--){
        solve();
    }
}

컴파일 시 표준 에러 (stderr) 메시지

Main.cpp: In function 'int main()':
Main.cpp:16:47: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   16 | #define inp(name) if(fopen(name, "r")) freopen(name, "r", stdin);
      |                                        ~~~~~~~^~~~~~~~~~~~~~~~~~
Main.cpp:77:5: note: in expansion of macro 'inp'
   77 |     inp("in.txt");
      |     ^~~

• 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