oj.uz

Submission #1112662

# Submission time Handle Problem Language Result Execution time Memory
1112662 2024-11-14T14:11:12 Z vjudge1 Gift (IZhO18_nicegift) C++17
7 / 100
 2000 ms 100948 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;
    while (1) {
        vi vv;
        auto itt = ms.begin();
        int ctr = 0;
        for (;ctr != k;++itt) {
            vv.push_back(itt->ss);
            ctr++;
        }
        if (ms.size() == k) {
            if (ms.begin()->ff != ms.rbegin()->ff) {
                cout << -1 << '\n';
                return;
            }
            ops.push_back({ms.begin()->ff,vv});
            break;
        }
        int subt = (ms.begin()->ff-next(ms.begin(),k)->ff);
        if (!subt) {
            ops.push_back({ms.begin()->ff,vv});
            for (auto it : vv) {
                ms.erase({a[it],it});
                a[it]-=subt;
            }
            continue;
        }
        for (auto it : vv) {
            ms.erase({a[it],it});
            if (a[it]-subt > 0) ms.insert({a[it]-subt,it});
            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 << endl;
    }
}  
 
                
                            
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:41:23: 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]
   41 |         if (ms.size() == k) {
      |             ~~~~~~~~~~^~~~

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 500 KB n=3
4 Correct 1 ms 336 KB n=4
5 Correct 1 ms 460 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 500 KB n=3
4 Correct 1 ms 336 KB n=4
5 Correct 1 ms 460 KB n=4
6 Correct 1 ms 336 KB n=2
7 Correct 1 ms 336 KB n=5
8 Incorrect 1 ms 336 KB Taken too much stones from the heap
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 500 KB n=3
4 Correct 1 ms 336 KB n=4
5 Correct 1 ms 460 KB n=4
6 Correct 1 ms 336 KB n=2
7 Correct 1 ms 336 KB n=5
8 Incorrect 1 ms 336 KB Taken too much stones from the heap
9 Halted 0 ms 0 KB -

Subtask #4
0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 1285 ms 100948 KB n=1000000
2 Correct 684 ms 63560 KB n=666666
3 Correct 320 ms 36936 KB n=400000
4 Execution timed out 2053 ms 26044 KB Time limit exceeded
5 Halted 0 ms 0 KB -

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 500 KB n=3
4 Correct 1 ms 336 KB n=4
5 Correct 1 ms 460 KB n=4
6 Correct 1 ms 336 KB n=2
7 Correct 1 ms 336 KB n=5
8 Incorrect 1 ms 336 KB Taken too much stones from the heap
9 Halted 0 ms 0 KB -