제출 #949284

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
949284		vjudge1	Sirni (COCI17_sirni)	C++17	42 / 140	584 ms	786432 KiB

sirni

#include <bits/stdc++.h>
#define ll long long
#define str string
#define ins insert
#define ld long double
#define pb push_back
#define pf push_front
#define pof pop_front()
#define pob pop_back()
#define lb lower_bound
#define ub upper_bound
#define endl "\n"
#define fr first
#define sc second
#define all(x) x.begin(),x.end()
#define rall(x) x.rbegin(),x.rend()
#define sz size()
#define vll vector<ll>
#define bc back()
#define arr array
#define pll vector<pair<ll,ll>>
using namespace std;/*
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace __gnu_pbds;
#define ordered_set tree<ll, null_type,less_equal<ll>, rb_tree_tag,tree_order_statistics_node_update>*/
template<class S,class T>
bool chmin(S &a,const T &b) {
	return a>b?(a=b)==b:false;
}
template<class S,class T>
bool chmax(S &a,const T &b) {
	return a<b?(a=b)==b:false;
}
void start(){
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
}
const ll N=1e5+5;
const ll M=1e7+5;
ll siz[N],p[N];
vll v(1);
ll anc(ll a){
    return (a==p[a] ? a : p[a]=anc(p[a]));
}
bool uni(ll a,ll b){
    a=anc(a);
    b=anc(b);
    if(a==b) return false;
    if(siz[a]>siz[b])swap(a,b);
    siz[b]+=siz[a];
    p[a]=b;
    return true;
}
void solve(){
    ll i,j;
    ll n,sum=0;
    cin>>n;
    ll a;
    set<ll> st;
    for(i=0;i<n;i++){
        cin>>a;
        p[i+1]=i+1;
        siz[i+1]=1;
        st.ins(a);
    }
    n=st.sz;
    for(auto i : st) v.pb(i);
    vector<pair<ll,pair<ll,ll>>> e;
    for(i=1;i<=n;i++){
        for(j=i+1;j<=n;j++){
            e.pb({v[j]%v[i],{i,j}});
        }
    }
    sort(all(e));
    ll c=n-1,ans=0;
    for(i=0;i<e.sz;i++){
        if(uni(e[i].sc.fr,e[i].sc.sc)){c--;ans+=e[i].fr;}
        if(!c) break;
    }
    cout<<ans<<endl;
}
signed main(){
	start();
    ll t=1;
    //cin>>t;
    while(t--) solve();
    return 0;
}
/*




*/

컴파일 시 표준 에러 (stderr) 메시지

sirni.cpp: In function 'void solve()':
sirni.cpp:78:14: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<std::pair<long long int, std::pair<long long int, long long int> > >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   78 |     for(i=0;i<e.sz;i++){
      |              ^
sirni.cpp:58:10: warning: unused variable 'sum' [-Wunused-variable]
   58 |     ll n,sum=0;
      |          ^~~

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