oj.uz

Submission #1112675

# Submission time Handle Problem Language Result Execution time Memory
1112675 2024-11-14T14:32:26 Z vjudge1 Gift (IZhO18_nicegift) C++17
26 / 100
 632 ms 101168 KB 
//Dost SEFEROĞLU
#pragma GCC optimize("O3,unroll-loops")
#pragma GCC target("avx2")
#include <bits/stdc++.h>
using namespace std;
#define int long long
#define pii pair<int,int>
#define ff first
#define ss second
#define sp << " " << 
#define vi vector<int>
#define all(xx) xx.begin(),xx.end()
#define ps(xxx) cout << (xxx) << endl;
const int N = 5e2+1,inf = 1e16,MOD = 1e9+7; 
 

void solve() { 
    int n,k;
    cin >> n >> k;
    int s = 0;
    set<pii,greater<pii>> ms;
    vi a(n+1);
    for (int i=1;i<=n;i++) {
        cin >> a[i];
        s+=a[i];
        ms.insert({a[i],i});
    }
    if (s%k != 0 || ms.rbegin()->ff > s/k) {
        cout << -1 << endl;
        return;
    } 
    vector<pair<int,vi>> ops;
    int sm = s/k;
    while (!ms.empty()) {
        vi vv;
        auto itt = ms.begin();
        int ctr = 0;
        for (;ctr != k;++itt) {
            vv.push_back(itt->ss);
            ctr++;
        }
        if (ms.size() == k) assert(ms.begin()->ff == ms.rbegin()->ff);
        int knxt = next(ms.begin(),k-1)->ff;
        int subt = min(knxt,sm-((ms.size() > k) ? (next(ms.begin(),k)->ff) : 0ll));
        sm-=subt;
        for (auto it : vv) {
            ms.erase({a[it],it});
            if (a[it]-subt > 0) ms.insert({a[it]-subt,it});
            //else assert(a[it] == subt);
            a[it]-=subt;
        }
        ops.push_back({subt,vv});
    }
    cout << ops.size() << '\n';
    for (auto it : ops) {
        cout << it.ff << " ";
        for (auto itt : it.ss) cout << itt <<  " ";
        cout << '\n';
    }
}  
 
                
                            
signed main() { 
    ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
    #ifdef Dodi
        freopen("in.txt","r",stdin);
        freopen("out.txt","w",stdout);
    #endif
    int t = 1;
    //cin >> t; 
    while (t --> 0) solve();
}

Compilation message

nicegift.cpp: In function 'void solve()':
nicegift.cpp:42:23: warning: comparison of integer expressions of different signedness: 'std::set<std::pair<long long int, long long int>, std::greater<std::pair<long long int, long long int> > >::size_type' {aka 'long unsigned int'} and 'long long int' [-Wsign-compare]
   42 |         if (ms.size() == k) assert(ms.begin()->ff == ms.rbegin()->ff);
      |             ~~~~~~~~~~^~~~
nicegift.cpp:44:44: warning: comparison of integer expressions of different signedness: 'std::set<std::pair<long long int, long long int>, std::greater<std::pair<long long int, long long int> > >::size_type' {aka 'long unsigned int'} and 'long long int' [-Wsign-compare]
   44 |         int subt = min(knxt,sm-((ms.size() > k) ? (next(ms.begin(),k)->ff) : 0ll));
      |                                  ~~~~~~~~~~^~~

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB n=4
2 Correct 1 ms 336 KB n=3
3 Correct 1 ms 336 KB n=3
4 Correct 1 ms 336 KB n=4
5 Correct 1 ms 336 KB n=4
6 Correct 1 ms 336 KB n=2

Subtask #2
0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB n=4
2 Correct 1 ms 336 KB n=3
3 Correct 1 ms 336 KB n=3
4 Correct 1 ms 336 KB n=4
5 Correct 1 ms 336 KB n=4
6 Correct 1 ms 336 KB n=2
7 Correct 1 ms 336 KB n=5
8 Runtime error 1 ms 592 KB Execution killed with signal 6
9 Halted 0 ms 0 KB -

Subtask #3
0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB n=4
2 Correct 1 ms 336 KB n=3
3 Correct 1 ms 336 KB n=3
4 Correct 1 ms 336 KB n=4
5 Correct 1 ms 336 KB n=4
6 Correct 1 ms 336 KB n=2
7 Correct 1 ms 336 KB n=5
8 Runtime error 1 ms 592 KB Execution killed with signal 6
9 Halted 0 ms 0 KB -

Subtask #4
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 632 ms 101168 KB n=1000000
2 Correct 380 ms 55244 KB n=666666
3 Correct 207 ms 32340 KB n=400000
4 Correct 132 ms 24516 KB n=285714
5 Correct 9 ms 1884 KB n=20000
6 Correct 80 ms 14660 KB n=181818
7 Correct 4 ms 1116 KB n=10000
8 Correct 3 ms 852 KB n=6666
9 Correct 2 ms 592 KB n=4000
10 Correct 4 ms 592 KB n=2857
11 Correct 1 ms 592 KB n=2000

Subtask #5
0 / 51.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB n=4
2 Correct 1 ms 336 KB n=3
3 Correct 1 ms 336 KB n=3
4 Correct 1 ms 336 KB n=4
5 Correct 1 ms 336 KB n=4
6 Correct 1 ms 336 KB n=2
7 Correct 1 ms 336 KB n=5
8 Runtime error 1 ms 592 KB Execution killed with signal 6
9 Halted 0 ms 0 KB -