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Submission #168522

# Submission time Handle Problem Language Result Execution time Memory
168522 2019-12-13T12:17:51 Z achibasadzishvili Gift (IZhO18_nicegift) C++14
49 / 100
 1018 ms 96564 KB 
#include <bits/stdc++.h>
#pragma GCC optimize "-O3"
#pragma GCC optimize("Ofast")
#pragma GCC optimization ("unroll-loops")
#define ll long long
#define f first
#define s second
#define pb push_back
#define mp make_pair
using namespace std;
ll n,k,a[2000005],s,las,p,cur,maxi,l,r,mid,can,ans1,x1;
set<pair<ll,int> >st;
vector<vector<ll> >ans;
ll g[4000005],sz=0,wsz;
set<pair<ll,int> >::iterator it;
int main(){
	ios::sync_with_stdio(false);
	cin.tie(0);
	cout.tie(0);
	cin >> n >> k;
  bool ok = 1;
    for(int i=1; i<=n; i++){
    	cin >> a[i];
        s += a[i];
        st.insert(mp(-a[i] , i));
    }
 
    if(s % k){
        cout << "-1";
        return 0;
    }
    ll sum = s;
    while(sum){
    	if(sz > 2000000){
    		cout << "-1";
    		return 0;
    	}
        if((int)st.size() < k){
            cout << "-1";
            return 0;
        }
        p = 0,cur = 0;
        maxi = -(*st.begin()).f;
        g[sz] = -1;
        sz++;
        wsz = sz;
        for(it = st.begin(); it != st.end(); it++){
            p++;
            if(p > k){
                cur = (*it).s;
                break;
            }
            las = (*it).s;
        	g[sz] = (*it).s;
            sz++;
        }
        x1 = a[las];
        if(k > 1)x1 = (sum - maxi) / (k - 1);
        can = (sum - a[cur] * k) / k;
        if(can > x1)can = x1;
        if(can > a[las])can = a[las];
        sum -= can * k;
        ans1++;
        g[wsz - 1] = can;
        for(int i=wsz; i<sz; i++){
            st.erase(st.find(mp(-a[g[i]] , g[i])));
            a[g[i]]-=can;
            if(a[g[i]])st.insert(mp(-a[g[i]] , g[i]));
        }
    }
    
    cout << ans1 << " ";
 
    for(int i=0; i<sz; i++)
    	cout << g[i] << " ";
 
    return 0;
}

Compilation message

nicegift.cpp:4:0: warning: ignoring #pragma GCC optimization [-Wunknown-pragmas]
 #pragma GCC optimization ("unroll-loops")
 
nicegift.cpp: In function 'int main()':
nicegift.cpp:21:8: warning: unused variable 'ok' [-Wunused-variable]
   bool ok = 1;
        ^~

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB n=4
2 Correct 2 ms 376 KB n=3
3 Correct 2 ms 376 KB n=3
4 Correct 2 ms 376 KB n=4
5 Correct 2 ms 504 KB n=4
6 Correct 2 ms 376 KB n=2

Subtask #2
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB n=4
2 Correct 2 ms 376 KB n=3
3 Correct 2 ms 376 KB n=3
4 Correct 2 ms 376 KB n=4
5 Correct 2 ms 504 KB n=4
6 Correct 2 ms 376 KB n=2
7 Correct 2 ms 376 KB n=5
8 Correct 2 ms 376 KB n=8
9 Correct 2 ms 376 KB n=14
10 Correct 2 ms 376 KB n=11
11 Correct 34 ms 4988 KB n=50000
12 Correct 29 ms 4856 KB n=50000
13 Correct 2 ms 376 KB n=10
14 Correct 2 ms 504 KB n=685
15 Correct 2 ms 376 KB n=623
16 Correct 2 ms 504 KB n=973

Subtask #3
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB n=4
2 Correct 2 ms 376 KB n=3
3 Correct 2 ms 376 KB n=3
4 Correct 2 ms 376 KB n=4
5 Correct 2 ms 504 KB n=4
6 Correct 2 ms 376 KB n=2
7 Correct 2 ms 376 KB n=5
8 Correct 2 ms 376 KB n=8
9 Correct 2 ms 376 KB n=14
10 Correct 2 ms 376 KB n=11
11 Correct 34 ms 4988 KB n=50000
12 Correct 29 ms 4856 KB n=50000
13 Correct 2 ms 376 KB n=10
14 Correct 2 ms 504 KB n=685
15 Correct 2 ms 376 KB n=623
16 Correct 2 ms 504 KB n=973
17 Correct 2 ms 376 KB n=989
18 Correct 2 ms 376 KB n=563
19 Correct 3 ms 380 KB n=592
20 Correct 3 ms 504 KB n=938
21 Correct 2 ms 380 KB n=747
22 Correct 2 ms 376 KB n=991

Subtask #4
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 913 ms 96564 KB n=1000000
2 Correct 582 ms 62200 KB n=666666
3 Correct 334 ms 36148 KB n=400000
4 Correct 231 ms 25592 KB n=285714
5 Correct 14 ms 2040 KB n=20000
6 Correct 140 ms 16120 KB n=181818
7 Correct 8 ms 1144 KB n=10000
8 Correct 7 ms 1016 KB n=6666
9 Correct 4 ms 760 KB n=4000
10 Correct 7 ms 760 KB n=2857
11 Correct 3 ms 504 KB n=2000

Subtask #5
0 / 51.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB n=4
2 Correct 2 ms 376 KB n=3
3 Correct 2 ms 376 KB n=3
4 Correct 2 ms 376 KB n=4
5 Correct 2 ms 504 KB n=4
6 Correct 2 ms 376 KB n=2
7 Correct 2 ms 376 KB n=5
8 Correct 2 ms 376 KB n=8
9 Correct 2 ms 376 KB n=14
10 Correct 2 ms 376 KB n=11
11 Correct 34 ms 4988 KB n=50000
12 Correct 29 ms 4856 KB n=50000
13 Correct 2 ms 376 KB n=10
14 Correct 2 ms 504 KB n=685
15 Correct 2 ms 376 KB n=623
16 Correct 2 ms 504 KB n=973
17 Correct 2 ms 376 KB n=989
18 Correct 2 ms 376 KB n=563
19 Correct 3 ms 380 KB n=592
20 Correct 3 ms 504 KB n=938
21 Correct 2 ms 380 KB n=747
22 Correct 2 ms 376 KB n=991
23 Correct 913 ms 96564 KB n=1000000
24 Correct 582 ms 62200 KB n=666666
25 Correct 334 ms 36148 KB n=400000
26 Correct 231 ms 25592 KB n=285714
27 Correct 14 ms 2040 KB n=20000
28 Correct 140 ms 16120 KB n=181818
29 Correct 8 ms 1144 KB n=10000
30 Correct 7 ms 1016 KB n=6666
31 Correct 4 ms 760 KB n=4000
32 Correct 7 ms 760 KB n=2857
33 Correct 3 ms 504 KB n=2000
34 Correct 24 ms 2684 KB n=23514
35 Correct 24 ms 2680 KB n=23514
36 Correct 2 ms 504 KB n=940
37 Correct 2 ms 376 KB n=2
38 Correct 68 ms 9080 KB n=100000
39 Correct 66 ms 8952 KB n=100000
40 Correct 2 ms 376 KB n=10
41 Correct 2 ms 376 KB n=100
42 Correct 6 ms 504 KB n=1000
43 Incorrect 1018 ms 86640 KB Jury has the answer but participant has not
44 Halted 0 ms 0 KB -