Submission #977526

#	Time	Username	Problem	Language	Result	Execution time	Memory
977526		8pete8	Sirni (COCI17_sirni)	C++17	98 / 140	1711 ms	786432 KiB

sirni

#include<iostream>
#include<stack>
#include<map>
#include<vector>
#include<string>
#include<unordered_map>
#include <queue>
#include<cstring>
#include<limits.h>
#include <cassert>
#include<cmath>
#include<set>
#include<algorithm>
#include <iomanip>
#include<numeric> //gcd(a,b)
#include<bitset>
#include <cstdlib> 
#include <cstdint>
using namespace std;
#define ll long long
#define f first
//#define endl "\n"
#define s second
#define pii pair<int,int>
#define ppii pair<int,pii>
#define vi vector<int>
#define pb push_back
#define all(x) x.begin(),x.end()
#define rall(x) x.rbegin(),x.rend()
#define F(n) for(int i=0;i<n;i++)
#define lb lower_bound
#define ub upper_bound
#define fastio ios::sync_with_stdio(false);cin.tie(NULL);
#pragma GCC optimize ("03,unroll-loops")
#pragma GCC target("avx2,bmi,bmi2,lzcnt,popcnt")
using namespace std;
#define int long long
#define double long double
const int mxn=1e5,inf=1e9,minf=-1e9;
vector<int>v;
int p[mxn+10];
int mx=0;
int find(int u){return (p[u]==u)?u:p[u]=find(p[u]);}
bool merg(int a,int b){
	a=find(a),b=find(b);
	if(a==b)return 0;
	p[a]=b;
	return 1;
}
vector<pair<int,pii>>con;
struct num{
	int x;
	vector<int>wall;
	void init(int j){
		int cur=0,g=x;
		wall.pb(0);
		for(int i=x;i<=mx+1;i+=x){
			int l=((wall.empty())?0LL:wall.back()),r=v.size()-1;
			int pos=inf;
			while(l<=r){
				int mid=l+(r-l)/2;
				if(v[mid]>=i)r=mid-1,pos=min(pos,mid);
				else l=mid+1;
			}
			if(pos==inf)continue;
			if(wall.empty()||pos!=wall.back())wall.pb(pos);
		}//find block?
		for(int i=0;i<wall.size();i++)con.pb({v[wall[i]]%x,{j,wall[i]}});
	}
}t[mxn+10];
int32_t main(){
	fastio
	int n;cin>>n;
	for(int i=0;i<n;i++){
		int a;cin>>a;
		mx=max(mx,a);
		v.pb(a);
	}
	for(int i=0;i<n;i++)p[i]=i;
	sort(all(v));
	int ans=0;
	v.erase(unique(all(v)),v.end());
	for(int i=0;i<v.size();i++){
		t[i].x=v[i];
		t[i].init(i);
		if(i+1<v.size())con.pb({v[i+1]%v[i],{i,i+1}});
	}
	sort(all(con));
	int cnt=0;
	for(auto i:con)if(merg(i.s.f,i.s.s))ans+=(i.f),cnt++;
	if(cnt!=v.size()-1)assert(0);
	cout<<ans;
	return 0;
}
/*


*/

Compilation message (stderr)

sirni.cpp: In member function 'void num::init(long long int)':
sirni.cpp:68:16: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   68 |   for(int i=0;i<wall.size();i++)con.pb({v[wall[i]]%x,{j,wall[i]}});
      |               ~^~~~~~~~~~~~
sirni.cpp:55:7: warning: unused variable 'cur' [-Wunused-variable]
   55 |   int cur=0,g=x;
      |       ^~~
sirni.cpp:55:13: warning: unused variable 'g' [-Wunused-variable]
   55 |   int cur=0,g=x;
      |             ^
sirni.cpp: In function 'int32_t main()':
sirni.cpp:83:15: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   83 |  for(int i=0;i<v.size();i++){
      |              ~^~~~~~~~~
sirni.cpp:86:9: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   86 |   if(i+1<v.size())con.pb({v[i+1]%v[i],{i,i+1}});
      |      ~~~^~~~~~~~~
sirni.cpp:91:8: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   91 |  if(cnt!=v.size()-1)assert(0);
      |     ~~~^~~~~~~~~~~~

• Subtask 1: 14 / 14
• Subtask 2: 14 / 14
• Subtask 3: 14 / 14
• Subtask 4: 14 / 14
• Subtask 5: 14 / 14
• Subtask 6: 14 / 14
• Subtask 7: 14 / 14
• Subtask 8: 0 / 14
• Subtask 9: 0 / 14
• Subtask 10: 0 / 14