제출 #887166

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
887166		Servant_of_the_Lord	Sirni (COCI17_sirni)	C++17	140 / 140	2636 ms	607868 KiB

sirni

        #include <bits/stdc++.h>
        #pragma GCC optimize("O3")
        #pragma GCC target("avx,avx2,sse4")
        #define ll long long
         
        using namespace std;
         
        main()
        {
            ios_base::sync_with_stdio(false);
            cin.tie(0);
         
            ll x,y,z,a,b,c;
            cin>>x;
            set<pair<ll,ll>>s;
            for(ll i=0;i<x;i++)
            {
                cin>>y;
                s.insert({y,i});
            }
            vector<vector<ll>>v(10'000'000);
            for(pair<ll,ll> i:s)
            {
                if(v[i.first-1].empty())
                {
                    for(ll j=i.first-1;j<10'000'000;j+=i.first)
                    {
                        v[j].push_back(i.second);
                    }
                }
            }
            vector<ll>w(x,-1);
            function<ll(ll)>g=[&](ll a){return w[a]<0?a:w[a]=g(w[a]);};
            y=x;
            function<bool(ll,ll)>u=[&](ll a,ll b)
            {
                a=g(a),b=g(b);
                if(a==b)return false;
                if(w[a]>w[b])swap(a,b);
                w[a]+=w[b];
                w[b]=a;
                y--;
                return true;
            };
            a=0;
            bitset<10'000'000>t;
            for(ll i=0;i<10'000'000;i++)
            {
                vector<pair<ll,ll>>e;
                for(pair<ll,ll> j:s)
                {
                    for(ll k=0;k<v[j.first-i-1].size();k++)
                    {
                        if(u(j.second,v[j.first-i-1][k]))
                        {
                            a+=i;
                        }
                    }
                    if(j.first-i-1==0||t[j.first-i-1])e.push_back(j);
                    t[j.first-i-1]=1;
                }
                for(auto j:e)s.erase(j);
                if(s.empty()||y==1)break;
            }
            cout<<a<<'\n';
        }

컴파일 시 표준 에러 (stderr) 메시지

sirni.cpp:8:9: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
    8 |         main()
      |         ^~~~
sirni.cpp: In function 'int main()':
sirni.cpp:52:33: 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]
   52 |                     for(ll k=0;k<v[j.first-i-1].size();k++)
      |                                ~^~~~~~~~~~~~~~~~~~~~~~
sirni.cpp:13:20: warning: unused variable 'z' [-Wunused-variable]
   13 |             ll x,y,z,a,b,c;
      |                    ^
sirni.cpp:13:24: warning: unused variable 'b' [-Wunused-variable]
   13 |             ll x,y,z,a,b,c;
      |                        ^
sirni.cpp:13:26: warning: unused variable 'c' [-Wunused-variable]
   13 |             ll x,y,z,a,b,c;
      |                          ^

• 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: 14 / 14
• Subtask 9: 14 / 14
• Subtask 10: 14 / 14