Submission #912896

#	Time	Username	Problem	Language	Result	Execution time	Memory
912896		Muhammad_Aneeq	Ideal city (IOI12_city)	C++17	Compilation error	0 ms	0 KiB

city

#include <cmath>
#include <vector>
#include <map>
#include <algorithm>
#include <queue>
#include <iostream>
#include "grader.h"
using namespace std;
long long const MAXN=1e5+10;
vector<long long>nei[MAXN]={};
long long mod=1e9;
long long ans=0;
vector<long long>dx={0,0,-1,1},dy={-1,1,0,0};
long long dis[MAXN]={};
bool vis[MAXN]={};
void bfs(long long x)
{
	queue<int>s;
	s.push(x);
	vis[x]=1;
	while (s.size())
	{
		int y=s.front();
		s.pop();
		ans+=dis[y];
		for (auto j:nei[y])
		{
			if (!vis[j])
			{
				dis[j]=dis[y]+1;
				vis[j]=1;
				s.push(j);
			}
		}
	}
}
int DistanceSum(int N, int X[], int Y[])
{
	map<long long,vector<long long>>d;
	map<pair<long long,long long>,long long>ex,cnt;
	for (long long i=0;i<N;i++)
		d[X[i]].push_back(Y[i]);
	bool subtask_3=1;
	for (auto& i:d)
	{
		sort(begin(i.second),end(i.second));
		if (i.second.size()!=i.second.back()-i.second[0]+1)
		{
			subtask_3=0;
			break;
		}
	}
	if (subtask_3)
	{
		sort(Y,Y+N);
		sort(X,X+N);
		long long ans=0;
		long long szx=0,sux=0,szy=0,suy=0;
		for (long long i=0;i<N;i++)
		{
			long long g=1ll*Y[i]*szy-suy;
			g%=mod;
			ans=(ans+g)%mod;
			g=1ll*X[i]*szx-sux;
			g%=mod;
			ans=(ans+g)%mod;
			szy++;
			suy+=Y[i];
			szx++;
			sux+=X[i];
		}
		return ans;
	}
	for (int i=0;i<N;i++)
	{
		for (int j=0;j<N;j++)
		{
			if (abs(X[i]-X[j])+abs(Y[i]-Y[j])==1)
				nei[i].push_back(j);
		}
	}
	for (long long i=0;i<N;i++)
		dis[i]=0;
	for (long long i=0;i<N;i++)
	{
		bfs(i);
		for (long long j=0;j<N;j++)
			dis[j]=vis[j]=0;
	}
	return (ans/2)%mod;
}

Compilation message (stderr)

city.cpp:8:10: fatal error: grader.h: No such file or directory
    8 | #include "grader.h"
      |          ^~~~~~~~~~
compilation terminated.