//я так много думал, что опять попал
#include <bits/stdc++.h>
#define all(x) x.begin(),x.end()
#define pb push_back
#define ppb pop_back
#define pf push_front
#define ppf pop_front
#define f first
#define s second
#define left(v) v + v
#define right(v) v + v + 1
#define ub upper_bound
#define lb lower_bound
using namespace std;
typedef long long ll;
//17 SEVENTEEN
const long double Pi = acos(-1.0);
const ll dx[] = {0,0,1,-1};
const ll dy[] = {1,-1,0,0};
const ll N = (ll) 1e5 + 17;
const ll M = (ll) 5e3 + 69;
const ll inf = (ll) 1e14 + 3;
const ll mod = (ll) 1e9 + 7;
ll sq(ll x) { return x * x; }
ll zxc = 1, a[N];
multiset<pair<ll, ll> > st;
vector<vector<pair<ll, ll> > > ans;
void solve() {
ll n, k;
cin >> n >> k;
for(ll i = 1; i <= n; i++) {
cin >> a[i];
st.insert({a[i], i});
}
while(k <= st.size()) {
ll cnt = 0;
vector<pair<ll, ll> > v;
while(v.size() < k) {
pair<ll,ll> x = *st.rbegin();
x.f--, v.pb(x);
st.erase(st.find(*st.rbegin()));
}
for(auto x : v) {
if(x.f) st.insert(x);
}
ans.pb(v);
}
if(!st.empty()) { cout << "-1\n"; return; }
cout << ans.size() << "\n";
for(auto v : ans) {
cout << "1 ";
for(auto x : v) cout << x.s << " ";
cout << "\n";
}
}
int main(/*Уверенно*/) {
ios_base::sync_with_stdio(0);
cin.tie(0);
/*
freopen(".in", "r", stdin);
freopen(".out", "w", stdout);
*/
// cin >> zxc;
while(zxc--) {
solve();
}
return 0;
}
// さよならさ いかなくちゃ
Compilation message
nicegift.cpp: In function 'void solve()':
nicegift.cpp:43:13: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::multiset<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
43 | while(k <= st.size()) {
| ~~^~~~~~~~~~~~
nicegift.cpp:48:24: warning: comparison of integer expressions of different signedness: 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} and 'll' {aka 'long long int'} [-Wsign-compare]
48 | while(v.size() < k) {
| ~~~~~~~~~^~~
nicegift.cpp:45:12: warning: unused variable 'cnt' [-Wunused-variable]
45 | ll cnt = 0;
| ^~~
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
0 ms |
204 KB |
n=4 |
| 2 |
Correct |
0 ms |
204 KB |
n=3 |
| 3 |
Correct |
1 ms |
204 KB |
n=3 |
| 4 |
Correct |
0 ms |
320 KB |
n=4 |
| 5 |
Correct |
1 ms |
316 KB |
n=4 |
| 6 |
Correct |
1 ms |
204 KB |
n=2 |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
0 ms |
204 KB |
n=4 |
| 2 |
Correct |
0 ms |
204 KB |
n=3 |
| 3 |
Correct |
1 ms |
204 KB |
n=3 |
| 4 |
Correct |
0 ms |
320 KB |
n=4 |
| 5 |
Correct |
1 ms |
316 KB |
n=4 |
| 6 |
Correct |
1 ms |
204 KB |
n=2 |
| 7 |
Correct |
1 ms |
328 KB |
n=5 |
| 8 |
Correct |
3 ms |
964 KB |
n=8 |
| 9 |
Correct |
8 ms |
1412 KB |
n=14 |
| 10 |
Correct |
4 ms |
1100 KB |
n=11 |
| 11 |
Correct |
43 ms |
6932 KB |
n=50000 |
| 12 |
Correct |
42 ms |
6928 KB |
n=50000 |
| 13 |
Correct |
22 ms |
4224 KB |
n=10 |
| 14 |
Correct |
24 ms |
3712 KB |
n=685 |
| 15 |
Correct |
26 ms |
3992 KB |
n=623 |
| 16 |
Correct |
18 ms |
2464 KB |
n=973 |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
0 ms |
204 KB |
n=4 |
| 2 |
Correct |
0 ms |
204 KB |
n=3 |
| 3 |
Correct |
1 ms |
204 KB |
n=3 |
| 4 |
Correct |
0 ms |
320 KB |
n=4 |
| 5 |
Correct |
1 ms |
316 KB |
n=4 |
| 6 |
Correct |
1 ms |
204 KB |
n=2 |
| 7 |
Correct |
1 ms |
328 KB |
n=5 |
| 8 |
Correct |
3 ms |
964 KB |
n=8 |
| 9 |
Correct |
8 ms |
1412 KB |
n=14 |
| 10 |
Correct |
4 ms |
1100 KB |
n=11 |
| 11 |
Correct |
43 ms |
6932 KB |
n=50000 |
| 12 |
Correct |
42 ms |
6928 KB |
n=50000 |
| 13 |
Correct |
22 ms |
4224 KB |
n=10 |
| 14 |
Correct |
24 ms |
3712 KB |
n=685 |
| 15 |
Correct |
26 ms |
3992 KB |
n=623 |
| 16 |
Correct |
18 ms |
2464 KB |
n=973 |
| 17 |
Correct |
27 ms |
3556 KB |
n=989 |
| 18 |
Correct |
15 ms |
1588 KB |
n=563 |
| 19 |
Correct |
30 ms |
2460 KB |
n=592 |
| 20 |
Correct |
22 ms |
2372 KB |
n=938 |
| 21 |
Correct |
16 ms |
1992 KB |
n=747 |
| 22 |
Correct |
18 ms |
2124 KB |
n=991 |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Runtime error |
36 ms |
14636 KB |
Execution killed with signal 11 |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
0 ms |
204 KB |
n=4 |
| 2 |
Correct |
0 ms |
204 KB |
n=3 |
| 3 |
Correct |
1 ms |
204 KB |
n=3 |
| 4 |
Correct |
0 ms |
320 KB |
n=4 |
| 5 |
Correct |
1 ms |
316 KB |
n=4 |
| 6 |
Correct |
1 ms |
204 KB |
n=2 |
| 7 |
Correct |
1 ms |
328 KB |
n=5 |
| 8 |
Correct |
3 ms |
964 KB |
n=8 |
| 9 |
Correct |
8 ms |
1412 KB |
n=14 |
| 10 |
Correct |
4 ms |
1100 KB |
n=11 |
| 11 |
Correct |
43 ms |
6932 KB |
n=50000 |
| 12 |
Correct |
42 ms |
6928 KB |
n=50000 |
| 13 |
Correct |
22 ms |
4224 KB |
n=10 |
| 14 |
Correct |
24 ms |
3712 KB |
n=685 |
| 15 |
Correct |
26 ms |
3992 KB |
n=623 |
| 16 |
Correct |
18 ms |
2464 KB |
n=973 |
| 17 |
Correct |
27 ms |
3556 KB |
n=989 |
| 18 |
Correct |
15 ms |
1588 KB |
n=563 |
| 19 |
Correct |
30 ms |
2460 KB |
n=592 |
| 20 |
Correct |
22 ms |
2372 KB |
n=938 |
| 21 |
Correct |
16 ms |
1992 KB |
n=747 |
| 22 |
Correct |
18 ms |
2124 KB |
n=991 |
| 23 |
Runtime error |
36 ms |
14636 KB |
Execution killed with signal 11 |
| 24 |
Halted |
0 ms |
0 KB |
- |
