Submission #100347

#	Time	Username	Problem	Language	Result	Execution time	Memory
100347		Linkus	Simfonija (COCI19_simfonija)	C++14	110 / 110	776 ms	6244 KiB

simfonija

#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
#define pb push_back
#define mp make_pair
#define all(a) begin(a),end(a)
#define FOR(x,val,to) for(int x=(val);x<int((to));++x)
#define FORE(x,val,to) for(auto x=(val);x<=(to);++x)
#define FORR(x,arr) for(auto &x: arr)
#define FORS(x,plus,arr) for(auto x = begin(arr)+(plus); x != end(arr); ++x)
#define FORREV(x,plus,arr) for(auto x = (arr).rbegin()+(plus); x !=(arr).rend(); ++x)
#define REE(s_) {cout<<s_<<'\n';exit(0);}
#define GET(arr) for(auto &i: (arr)) sc(i)
#define whatis(x) cerr << #x << " is " << (x) << endl;
#define e1 first
#define e2 second
#define INF 0x7f7f7f7f
typedef std::pair<int,int> pi;
typedef std::vector<int> vi;
typedef std::vector<std::string> vs;
typedef int64_t ll;
typedef uint64_t ull;
#define umap unordered_map
#define uset unordered_set
using namespace std;
using namespace __gnu_pbds;

#ifdef _WIN32
#define getchar_unlocked() _getchar_nolock()
#define _CRT_DISABLE_PERFCRIT_LOCKS
#endif
template<class L, class R> ostream& operator<<(ostream &os, map<L, R> P) { for(auto const &vv: P)os<<"("<<vv.first<<","<<vv.second<<")"; return os; }
template<class T> ostream& operator<<(ostream &os, set<T> V) { os<<"[";for(auto const &vv:V)os<<vv<<","; os<<"]"; return os; }
template<class T> ostream& operator<<(ostream &os, vector<T> V) { os<<"[";for(auto const &vv:V)os<<vv<<","; os<<"]"; return os; }
template<class L, class R> ostream& operator<<(ostream &os, pair<L, R> P) { os<<"("<<P.first<<","<<P.second<<")"; return os; }
inline int fstoi(const string &str){auto it=str.begin();bool neg=0;int num=0;if(*it=='-')neg=1;else num=*it-'0';++it;while(it<str.end()) num=num*10+(*it++-'0');if(neg)num*=-1;return num;}
inline void getch(char &x){while(x = getchar_unlocked(), x < 33){;}}
inline void getstr(string &str){str.clear(); char cur;while(cur=getchar_unlocked(),cur<33){;}while(cur>32){str+=cur;cur=getchar_unlocked();}}
template<typename T> inline bool sc(T &num){ bool neg=0; int c; num=0; while(c=getchar_unlocked(),c<33){if(c == EOF) return false;} if(c=='-'){ neg=1; c=getchar_unlocked(); } for(;c>47;c=getchar_unlocked()) num=num*10+c-48; if(neg) num*=-1; return true;}template<typename T, typename ...Args> inline void sc(T &num, Args &...args){ bool neg=0; int c; num=0; while(c=getchar_unlocked(),c<33){;} if(c=='-'){ neg=1; c=getchar_unlocked(); } for(;c>47;c=getchar_unlocked()) num=num*10+c-48; if(neg) num*=-1; sc(args...); }
template<typename T> using ordered_set = tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>; //s.find_by_order(), s.order_of_key() <- works like lower_bound
template<typename T> using ordered_map = tree<T, int, less<T>, rb_tree_tag, tree_order_statistics_node_update>;
#define N 100001

ll t[N << 2];
ll lazy[N << 2];

void build(ll v, ll tl, ll tr, ll arr[]){
    if(tl == tr){
        t[v] = arr[tl];
        return;
    }
    ll tm = (tl+tr)>>1;
    build(v<<1,tl,tm,arr);
    build(v<<1|1,tm+1,tr,arr);
    t[v] = t[v<<1] + t[v<<1|1];
}

void push(ll v, ll tl, ll tr){
    if(lazy[v]){
        ll tm = (tl+tr)>>1;
        t[v<<1] += (tm-tl+1)*lazy[v];
        t[v<<1|1] += (tr-tm)*lazy[v];
        lazy[v<<1] += lazy[v];
        lazy[v<<1|1] += lazy[v];
        lazy[v] = 0;
    }
}

void modify(ll v, ll tl, ll tr, ll l, ll r, ll val){
    if(l > r) return;
    if(tl == l && tr == r){
        lazy[v] += val;
        t[v] += val*(tr-tl+1);
        return;
    }
    push(v,tl,tr);
    ll tm = (tl+tr)>>1;
    modify(v << 1,tl,tm,l,min(tm,r),val);
    modify(v << 1 | 1,tm+1,tr,max(l,tm+1),r,val);
    t[v] = t[v<<1] + t[v<<1|1];
}

ll query(ll v, ll tl, ll tr, ll l, ll r){
    /* whatis(mp(tl,tr)) */
    /* whatis(t[v]) */
    if(l > r) return 0;
    if(tl == l && tr == r){
        return t[v];
    }
    push(v,tl,tr);
    ll tm = (tl+tr)>>1;
    return query(v<<1,tl,tm,l,min(tm,r)) + query(v<<1|1,tm+1,tr,max(l,tm+1),r);
}

int32_t main(){
    ios_base::sync_with_stdio(0);cin.tie(0);
    ll n,k;
    sc(n,k);
    ll a[n];
    ll tmp[n];
    GET(tmp);
    ll cr;
    FOR(i,0,n){
        sc(cr);
        a[i] = tmp[i]-cr;
    }
    sort(a,a+n);
    int dec = max((ll)0,a[n-1]+2);
    FORR(i,a) i -= dec;
    /* whatis(a[0]) */
    build(1,0,n-1,a);
    ll bord = 0; //first element with positive delta, n if none
    while(bord < n && a[bord] < 0) ++bord;
    assert(bord == n);
    ll ans = LONG_LONG_MAX;
    int xdd = 0;
    int prew = k-1, sufw = n;
    //wywalam do prew włącznie id 0, do sufw włącznie od n-1
    int ile = 0;
    while(bord || ++xdd < 5){
        modify(1,0,n-1,0,n-1,1);
        ++ile;
        /* while(bord && query(1,0,n-1,bord-1,bord-1) >= 0) --bord; */
        while(bord && a[bord-1]+ile >= 0) --bord;
        ll wh = 0;
        if(bord)
            wh += -query(1,0,n-1,0,bord-1);
        if(bord < n)
            wh += query(1,0,n-1,bord,n-1);
        while(~prew && -(a[prew]+ile) < a[sufw-1]+ile) --prew, --sufw;
        if(~prew)
            wh += query(1,0,n-1,0,prew);
        if(sufw < n)
            wh -= query(1,0,n-1,sufw,n-1);
        ans = min(ans,wh);
    }
    cout << ans << '\n';
}

• Subtask 1: 11 / 11
• Subtask 2: 11 / 11
• Subtask 3: 11 / 11
• Subtask 4: 11 / 11
• Subtask 5: 11 / 11
• Subtask 6: 11 / 11
• Subtask 7: 11 / 11
• Subtask 8: 11 / 11
• Subtask 9: 11 / 11
• Subtask 10: 11 / 11