oj.uz

Submission #502597

# Submission time Handle Problem Language Result Execution time Memory
502597 2022-01-06T10:17:47 Z lukameladze Gift (IZhO18_nicegift) C++14
7 / 100
 2000 ms 19396 KB 
#include <bits/stdc++.h>
#define f first
#define s second
#define int long long
#define pb push_back
#define pii pair <int, int>
using namespace std;
const int N = 3e5 + 5;
int n,k,a[N],mx,cur,sum,le,ri,mid,sum1,mx1,mn,anss;
vector < pii > v;
vector <int> ans[N];
int pas[N];
main() {
  	std::ios_base::sync_with_stdio(false),cin.tie(0),cout.tie(0);
    cin>>n>>k;
    for (int i = 1; i <= n; i++) {
        cin>>a[i];
        mx = max(mx,a[i]);
        sum += a[i];
    }
    if (mx > sum / k || sum % k) {
        cout<<"-1"<<endl;
        return 0;
    }
    while (true) {
        v.clear();
        int sum1 = 0;
        mx = 0;
        for (int i = 1; i <= n; i++) {
            if (a[i] != 0) v.pb({a[i],i});
            mx = max(mx,a[i]);
            sum1 += a[i];
        }
        if (v.size() == 0) break;
        sort(v.begin(),v.end());
        reverse(v.begin(),v.end());
        if (v.size() > k) mx1 = v[k].f;
        else mx1 = 0;
        mx = v[0].f; mn = v[k - 1].f;
        le = 1;
        ri = 1e5;
        while(le <= ri) {
            mid = (le + ri) / 2;
            if (mn < mid || max(mx1,mx-mid)>(sum1 - k*mid)/k) {
                ri = mid - 1;
            } else {
                anss = mid;
                le = mid + 1;
            }
        }
        cur++;
        pas[cur] = anss;
        for (int i = 0; i < k; i++) {
            a[v[i].s] -= anss;
            ans[cur].pb(v[i].s);
        }
    }
    cout<<cur<<"\n";
    for (int i = 1; i <= cur; i++) {
        cout<<pas[i]<<" ";
        for (int j = 0; j < ans[i].size(); j++) {
            cout<<ans[i][j]<<" ";
        }cout<<"\n";
    }
}

Compilation message

nicegift.cpp:13:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   13 | main() {
      | ^~~~
nicegift.cpp: In function 'int main()':
nicegift.cpp:37:22: 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 'long long int' [-Wsign-compare]
   37 |         if (v.size() > k) mx1 = v[k].f;
      |             ~~~~~~~~~^~~
nicegift.cpp:61:27: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   61 |         for (int j = 0; j < ans[i].size(); j++) {
      |                         ~~^~~~~~~~~~~~~~~

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 7244 KB n=4
2 Correct 3 ms 7244 KB n=3
3 Correct 4 ms 7244 KB n=3
4 Correct 4 ms 7244 KB n=4
5 Correct 4 ms 7372 KB n=4
6 Correct 3 ms 7244 KB n=2

Subtask #2
0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 7244 KB n=4
2 Correct 3 ms 7244 KB n=3
3 Correct 4 ms 7244 KB n=3
4 Correct 4 ms 7244 KB n=4
5 Correct 4 ms 7372 KB n=4
6 Correct 3 ms 7244 KB n=2
7 Correct 4 ms 7244 KB n=5
8 Correct 4 ms 7244 KB n=8
9 Correct 4 ms 7244 KB n=14
10 Correct 4 ms 7244 KB n=11
11 Execution timed out 2078 ms 8908 KB Time limit exceeded
12 Halted 0 ms 0 KB -

Subtask #3
0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 7244 KB n=4
2 Correct 3 ms 7244 KB n=3
3 Correct 4 ms 7244 KB n=3
4 Correct 4 ms 7244 KB n=4
5 Correct 4 ms 7372 KB n=4
6 Correct 3 ms 7244 KB n=2
7 Correct 4 ms 7244 KB n=5
8 Correct 4 ms 7244 KB n=8
9 Correct 4 ms 7244 KB n=14
10 Correct 4 ms 7244 KB n=11
11 Execution timed out 2078 ms 8908 KB Time limit exceeded
12 Halted 0 ms 0 KB -

Subtask #4
0 / 19.0

# Verdict Execution time Memory Grader output
1 Runtime error 48 ms 19396 KB Execution killed with signal 11
2 Halted 0 ms 0 KB -

Subtask #5
0 / 51.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 7244 KB n=4
2 Correct 3 ms 7244 KB n=3
3 Correct 4 ms 7244 KB n=3
4 Correct 4 ms 7244 KB n=4
5 Correct 4 ms 7372 KB n=4
6 Correct 3 ms 7244 KB n=2
7 Correct 4 ms 7244 KB n=5
8 Correct 4 ms 7244 KB n=8
9 Correct 4 ms 7244 KB n=14
10 Correct 4 ms 7244 KB n=11
11 Execution timed out 2078 ms 8908 KB Time limit exceeded
12 Halted 0 ms 0 KB -