Submission #1065718

#	Time	Username	Problem	Language	Result	Execution time	Memory
1065718		mindiyak	Building Skyscrapers (CEOI19_skyscrapers)	C++17	0 / 100	64 ms	6668 KiB

skyscrapers

#pragma GCC optimize("O1,O2,O3,Ofast,unroll-loops")
#include <bits/stdc++.h>
#include <string>
#include <iostream>
#include <cmath>
#include <numeric>
#include <stack>
#include <queue>
using namespace std;
typedef long long ll;
typedef unsigned long long ull;
typedef long double ld;
typedef pair<int, int> pi;
typedef pair<ll, ll> pl;
typedef pair<ld, ld> pd;
typedef vector<int> vi;
typedef vector<bool> vb;
typedef vector<vector<int>> vvi;
typedef vector<vector<pi>> vvpi;
typedef vector<ld> vd;
typedef vector<long long> vl;
typedef vector<pi> vpi;
typedef vector<pl> vpl;
#define FOR(i, a, b) for (ll i = a; i < (b); i++)
#define F0R(i, a) for (int i = 0; i < (a); i++)
#define FORd(i, a, b) for (int i = (b)-1; i >= a; i--)
#define F0Rd(i, a) for (int i = (a)-1; i >= 0; i--)
#define trav(a, x) for (auto &a : x)
#define uid(a, b) uniform_int_distribution<int>(a, b)(rng)
#define len(x) (int)(x).size()
#define mp make_pair
#define pb push_back
#define F first
#define nl endl
#define S second
#define lb lower_bound
#define ub upper_bound
#define aint(x) x.begin(), x.end()
#define raint(x) x.rbegin(), x.rend()
#define ins insert
const int MOD = 1e6+3;
void init(string name)
{
    freopen((name + ".in").c_str(), "r", stdin);
    freopen((name + ".out").c_str(), "w", stdout);
}
void fastIO()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0);
}
 
vi tryx = {0,0,1,-1,-1,1,-1,1};
vi tryy = {1,-1,0,0,-1,-1,1,1};
 
void solve()
{
    int n,t;cin >> n >> t;
    map<pi,int> mp;
    priority_queue<pair<int,pi>> arr;
    FOR(i,0,n){
        int a,b;cin >> a >> b;
        if(i==0)arr.push({-1,{a,b}});
        else mp[{a,b}] = i+1;
    }

    vi ans;

    while(!arr.empty()){
        auto edge = arr.top();arr.pop();
        ans.pb(-edge.F);
        pi pos = edge.S;
        FOR(i,0,8){
            int x = pos.F + tryx[i], y = pos.S + tryy[i];
            if(mp.count({x,y})){
                arr.push({-mp[{x,y}], {x,y}});
                mp.erase({x,y});
            }
        }
    }

    if(ans.size() != n){cout << "NO\n";return;}

    cout << "YES\n";
    for(int a:ans)cout << a << "\n";

}   
 
 
int main()
{
    fastIO();
    // init("test");
    int t = 1;
    // cin >> t;
    while (t--)
        solve();
    return 0;
}

Compilation message (stderr)

skyscrapers.cpp: In function 'void solve()':
skyscrapers.cpp:82:19: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   82 |     if(ans.size() != n){cout << "NO\n";return;}
      |        ~~~~~~~~~~~^~~~
skyscrapers.cpp: In function 'void init(std::string)':
skyscrapers.cpp:44:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   44 |     freopen((name + ".in").c_str(), "r", stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
skyscrapers.cpp:45:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   45 |     freopen((name + ".out").c_str(), "w", stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 0 / 8
• Subtask 2: 0 / 14
• Subtask 3: 0 / 12
• Subtask 4: 0 / 17
• Subtask 5: 0 / 20
• Subtask 6: 0 / 10
• Subtask 7: 0 / 19