Submission #725081

#	Time	Username	Problem	Language	Result	Execution time	Memory
725081		stevancv	Ideal city (IOI12_city)	C++14	Compilation error	0 ms	0 KiB

city

#include <bits/stdc++.h>
#include "city.h"
#define ll long long
#define ld long double
#define sp ' '
#define en '\n'
#define smin(a, b) a = min(a, b)
#define smax(a, b) a = max(a, b)
using namespace std;
const int N = 1e5 + 2;
const int inf = 1e9;
vector<int> g[N];
ll sz[N], ans;
void Dfs(int s, int e, int n) {
    for (int u : g[s]) {
        if (u == e) continue;
        Dfs(u, s, n);
        sz[s] += sz[u];
    }
    for (int u : g[s]) {
        if (u == e) continue;
        ans += sz[u] * (n - sz[u]);
    }
}
int Resi(int n, int x[], int y[]) {
    map<int, vector<int>> mp;
    map<pair<int, int>, int> id;
    for (int i = 0; i < n; i++) mp[x[i]].push_back(y[i]);
    for (int i = 0; i < n; i++) {
        g[i].clear();
        sz[i] = 0;
    }
    int tsz = 0;
    for (auto z : mp) {
        int ii = z.first;
        auto v = z.second;
        sort(v.begin(), v.end());
        int c = 0;
        for (int i = 0; i < v.size(); i++) {
            if (i == 0 || v[i - 1] + 1 == v[i]) c++;
            else {
                sz[tsz++] = c;
                c = 1;
            }
            id[{ii, v[i]}] = tsz;
        }
        sz[tsz++] = c;
        for (int i = 0; i < v.size(); i++) {
            if (id.find({ii - 1, v[i]}) != id.end()) {
                int o = id[{ii - 1, v[i]}];
                int oo = id[{ii, v[i]}];
                g[o].push_back(oo);
                g[oo].push_back(o);
            }
        }
    }
    for (int i = 0; i < tsz; i++) {
        sort(g[i].begin(), g[i].end());
        g[i].erase(unique(g[i].begin(), g[i].end()), g[i].end());
    }
    ans = 0;
    Dfs(0, -1, n);
    ans %= inf;
    return ans;
}
int DistanceSum(int n, int x[], int y[]) {return (Resi(n, x, y) + Resi(n, y, x)) % inf;}

Compilation message (stderr)

city.cpp:2:10: fatal error: city.h: No such file or directory
    2 | #include "city.h"
      |          ^~~~~~~~
compilation terminated.