Submission #415025

#	Time	Username	Problem	Language	Result	Execution time	Memory
415025		Collypso	Ideal city (IOI12_city)	C++17	Compilation error	0 ms	0 KiB

city

#include <bits/stdc++.h>
#define ll long long
#define ld long double
#define pii pair<int, int>
#define pll pair<ll, ll>
#define vt vector
#define pb push_back
#define all(x) (x).begin(), (x).end()
#define sz(x) (int) (x).size()
#pragma GCC optimize ("O3")
#pragma GCC optimize ("O2")
#define F first
#define S second
//#define endl '\n'
//#define int long long

#include "city.h"

const int MOD = 1e9;

using namespace std;

map<pii, bool> filled;
map<pii, int> dist;

int bfs(pii start, int i)
{
    dist.clear();
    for(auto x : filled)
        if (x.S) dist[x.F] = INT_MAX;
    queue<pii> q;
    q.push(start);
    dist[start] = 0;
    while(!q.empty())
    {
        pii v = q.front();
        q.pop();

        int d = dist[{v.F, v.S}];
        if (filled[{v.F + 1, v.S}])
        {
            if (dist[{v.F + 1, v.S}] > d + 1)
                q.push({v.F + 1, v.S}), dist[{v.F + 1, v.S}] = d + 1;
        }
        if (filled[{v.F, v.S + 1}])
        {
            if (dist[{v.F, v.S + 1}] > d + 1)
                q.push({v.F, v.S + 1}), dist[{v.F, v.S + 1}] = d + 1;
        }
        if (filled[{v.F - 1, v.S}])
        {
            if (dist[{v.F - 1, v.S}] > d + 1)
                q.push({v.F - 1, v.S}), dist[{v.F - 1, v.S}] = d + 1;
        }
        if (filled[{v.F, v.S - 1}])
        {
            if (dist[{v.F, v.S - 1}] > d + 1)
                q.push({v.F, v.S - 1}), dist[{v.F, v.S - 1}] = d + 1;
        }
    }
    int ans = 0;
    int j = 0;
    for(auto x : dist)
    {
        if (j > i) ans = (1ll * ans + x.S) % MOD;
        j++;
    }
    return ans;
}

int subtask12(int N, int* X, int* Y)
{
    for(int i = 0; i < N; i++)
        filled[{*(X + i), *(Y + i)}] = 1;
    int ans = 0;
    for(int i = 0; i < N; i++)
        ans = (1ll * ans + bfs({*(X + i), *(Y + i)}, i)) % MOD;
    return ans;
}

int DistanceSum(int N, int* X, int* Y)
{
    if (N <= 2000) return subtask12(N, X, Y);

}

/*
11
2 5
2 6
3 3
3 6
4 3
4 4
4 5
4 6
5 3
5 4
5 6
*/

Compilation message (stderr)

city.cpp:17:10: fatal error: city.h: No such file or directory
   17 | #include "city.h"
      |          ^~~~~~~~
compilation terminated.