제출 #334639

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
334639		talant117408	Gift (IZhO18_nicegift)	C++17	30 / 100	2090 ms	55332 KiB

nicegift

/*
    Code written by Talant I.D.
*/
  
#include <bits/stdc++.h>
  
using namespace std;
  
typedef long long ll;
typedef pair <int, int> pii;
typedef pair <ll, ll> pll;
  
#define precision(n) fixed << setprecision(n)
#define pb push_back
#define ub upper_bound
#define lb lower_bound
#define mp make_pair
#define eps (double)1e-9
#define PI 2*acos(0.0)
#define endl "\n"
#define sz(v) int((v).size())
#define all(v) v.begin(),v.end()
#define rall(v) v.rbegin(),v.rend()
#define do_not_disturb ios::sync_with_stdio(0);cin.tie(0);cout.tie(0);
#define OK cout << "OK" << endl;
  
inline bool isvowel(char ch){
    ch = tolower(ch);
    return (ch == 'a' || ch == 'e' || ch == 'i' || ch == 'o' || ch == 'u');
}
  
inline bool isprime(int n){
    if(n < 2 || (n%2 == 0 && n != 2)) return false;
    for(int i = 3; i*i <= n; i++)
        if(n%i == 0) return false;
    return true;
}

class Union{
    private:
        vector <int> saizu, link;
    public:
        Union(int n){
            saizu.assign(n+1, 1); link.resize(n+1); 
            iota(all(link), 0);
        }
        int find(int n){
            if(link[n] == n) return n;
            return link[n] = find(link[n]);
        }
        int same(int a, int b){
            return find(a) == find(b);
        }
        void unite(int a, int b, int val){
            if(same(a, b)) return;
             
            a = find(a); b = find(b);
            if(saizu[a] < saizu[b]) swap(a, b);
            
            saizu[a] += saizu[b];
            link[b] = a;
        }
        int getsize(int a){
            return saizu[find(a)];
        }
};
 
const int mod = 1e9+7;
 
ll mode(ll a){
    a %= mod;
    if(a < 0) a += mod;
    return a;
}
 
ll subt(ll a, ll b){
    return mode(mode(a)-mode(b));
}
 
ll add(ll a, ll b){
    return mode(mode(a)+mode(b));
}
 
ll mult(ll a, ll b){
    return mode(mode(a)*mode(b));
}
 
ll binpow(ll a, ll b){
    ll res = 1;
    while(b){
        if(b&1) res = mult(res, a);
        a = mult(a, a);
        b >>= 1;
    }
    return res;
}

int main(){
    //do_not_disturb
    /*
    int n, m;
    int i, j;
    cin >> n >> m;
    int grid[n+1][m+1];
    int pref[2][n+2][m+2], suff[2][n+2][m+2];
    for(i = 1; i <= n; i++){
        for(j = 1; j <= m; j++){
            char ch;
            cin >> ch;
            if(ch == '0') grid[i][j] = 0;
            else grid[i][j] = 1;
        }
    }
    
    */
    
    int i;
    ll n, k;
    cin >> n >> k;
    ll v[n];
    ll sum = 0, mx = 0;
    for(i = 0; i < n; i++){
        cin >> v[i];
        sum += v[i];
        mx = max(mx, v[i]);
    }
    
    if(sum % k || mx > sum/k){
        cout << -1;
        return 0;
    }
    
    vector <ll> operations[1000007];
    vector <pll> vec[k];
    ll cnt = 0, ind = 0;
    
    for(i = 0; i < n; i++){
        cnt += v[i];
        if(cnt >= sum/k){
            vec[ind++].pb(mp(v[i]-cnt+sum/k, i));
            cnt -= sum/k;
            if(cnt) vec[ind].pb(mp(cnt, i));
        }
        else{
            vec[ind].pb(mp(v[i], i));
        }
    }
    for(i = 0; i < ind; i++) reverse(all(vec[i]));
    ind = 0;
    
    bool flag = 1;
    while(flag){
        flag = 0;
        ll mn = 9e18;
        for(auto it : vec) mn = min(mn, it.back().first);
        operations[ind].pb(mn-1);
        
        for(i = 0; i < k; i++){
            operations[ind].pb(vec[i].back().second);
            vec[i].back().first -= mn;
            if(vec[i].back().first == 0) vec[i].pop_back();
        }
        ind++;
        flag |= !vec[0].empty();
    }
    
    cout << ind << endl;
    for(int i = 0; i < ind; i++){
        auto it = operations[i];
        for(auto to : it) cout << to+1 << ' ';
        cout << endl;
    }
    
    return 0;
}
/*
6 6
000111
011111
011111
111000
111000
111000

6 6
000000
111000
111100
001111
000111
000111
*/

• Subtask 1: 7 / 7
• Subtask 2: 11 / 11
• Subtask 3: 12 / 12
• Subtask 4: 0 / 19
• Subtask 5: 0 / 51