Submission #347449

#	Time	Username	Problem	Language	Result	Execution time	Memory
347449		juggernaut	Aliens (IOI16_aliens)	C++14	0 / 100	1 ms	364 KiB

aliens

#include"aliens.h"
#include<bits/stdc++.h>
#ifdef EVAL
#else
#include"grader.cpp"
#endif
using namespace std;
typedef long long ll;
bool vis[1005];
vector<int>g[1005];
ll mn,mx;
ll sq(ll a){
    return a*a;
}
void dfs(int v){
    vis[v]=1;
    mx=max(mx,1ll*v);
    mn=min(mn,1ll*v);
    for(int to:g[v])if(!vis[to])dfs(to);
}
ll take_photos(int n,int m,int k,vector<int>r,vector<int>c){
    sort(r.begin(),r.end());
    vector<pair<int,int>>v;
    for(int i=1;i<n;i++)v.push_back({r[i]-r[i-1]+1,i-1});
    ll ans=0;
    sort(v.begin(),v.end());
    n-=k;
    for(int i=0;i<n;i++){
        g[v[i].second].push_back(v[i].second+1);
        g[v[i].second+1].push_back(v[i].second);
    }
    n+=k;
    for(int i=0;i<n;i++)if(!vis[i]){
        mn=mx=i;
        dfs(i);
        mx=r[mx];
        mn=r[mn];
        ans+=sq(mx-mn+1);
    }
    return ans;
}

• Subtask 1: 0 / 4
• Subtask 2: 0 / 12
• Subtask 3: 0 / 9
• Subtask 4: 0 / 16
• Subtask 5: 0 / 19
• Subtask 6: 0 / 40