oj.uz

Submission #522271

# Submission time Handle Problem Language Result Execution time Memory
522271 2022-02-04T11:57:10 Z vonatlus Gift (IZhO18_nicegift) C++17
30 / 100
 262 ms 23720 KB 
/// adil sultanov | vonat1us 

#pragma GCC optimize("O3")
//#pragma comment(linker, "/STACK:36777216")

#include<bits/stdc++.h>

#define x first
#define y second
#define pb push_back
#define sz(x) (int) x.size()
#define all(z) (z).begin(), (z).end()
 
using namespace std;

using ll = long long;
using pii = pair<ll, int>;                                   

const int MOD = 1e9 + 7; 
const int INF = 1e9 + 1e2;
  
void fin() {
#ifdef AM
    freopen(".in", "r", stdin);
#endif        
}                   

const bool flag = 0;

const int N = 1e6+10;
 
pii t[N<<2];
 
ll a[N], n;
 
void build(int u = 0, int l = 0, int r = n) {
    if (r-l == 1) {
        t[u] = {a[l], l};
        return;
    }
    int m = l+r >> 1;
    build(u+u+1, l, m);
    build(u+u+2, m, r);
    t[u] = max(t[u+u+1], t[u+u+2]);
}
 
void modify(int pos, ll val, int u = 0, int l = 0, int r = n) {
    if (r-l == 1) {
        t[u].x = val;
        return;
    }
    int m = l+r >> 1;
    if (pos < m) {
        modify(pos, val, u+u+1, l, m);
    } else {
        modify(pos, val, u+u+2, m, r);
    }
    t[u] = max(t[u+u+1], t[u+u+2]);
}
 
void ma1n() {
    ll k;
    cin >> n >> k;
    ll sum = 0;
    for (int i = 0; i < n; ++i) {
        cin >> a[i], sum += a[i];
    }        
    if (sum%k) {
        cout << -1, exit(0);
    }
    if (*min_element(a, a+n) == *max_element(a, a+n)) {
        if (n%k == 0) {
            cout << n/k << "\n";
            for (int i = 0; i < n; i += k) {
                cout << a[i] << " ";
                for (int j = i; j < i+k; ++j) cout << j+1 << " ";
                cout << "\n";
            }
            return;
        }
        if (a[0]%k) {
            cout << -1, exit(0);
        }
        cout << n << "\n";
        for (int i = 0; i < n; ++i) {
            cout << a[i]/k << " ";
            for (int j = i; j < i+k; ++j) {
                cout << (j%n)+1 << " ";    
            }
            cout << "\n";
        } 
        return;
    } 
    vector<int> ans;
    build();
    while (1) {
        if (t[0].x == 0) break;
        vector<pii> v;
        for (int i = 0; i < k; ++i) {
            if (t[0].x == 0) {
                cout << -1, exit(0);
            }
            v.pb({t[0].y, t[0].x});
            modify(t[0].y, 0);
        }                   
        ll d = v.back().y-(t[0].x ? t[0].x : 1)+1;
        ans.pb(d);
        for (pii& x : v) {
            ans.pb(x.x+1);
            modify(x.x, x.y-d);
        }
    }
    cout << sz(ans)/(k+1) << "\n";
    for (int i = 0; i < sz(ans); i += k+1) {
        for (int j = i; j <= i+k; ++j) {
            cout << ans[j] << " ";
        }
        cout << "\n";
    }
} 

int main() {
    ios_base::sync_with_stdio(0);
    cin.tie(nullptr), fin();
    int ts = 1;
    if (flag) {
        cin >> ts;
    }
    while (ts--) {
        ma1n(); 
    }
    return 0;
}

Compilation message

nicegift.cpp: In function 'void build(int, int, int)':
nicegift.cpp:41:14: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   41 |     int m = l+r >> 1;
      |             ~^~
nicegift.cpp: In function 'void modify(int, ll, int, int, int)':
nicegift.cpp:52:14: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   52 |     int m = l+r >> 1;
      |             ~^~

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB n=4
2 Correct 0 ms 204 KB n=3
3 Correct 0 ms 204 KB n=3
4 Correct 0 ms 204 KB n=4
5 Correct 0 ms 204 KB n=4
6 Correct 0 ms 204 KB n=2

Subtask #2
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB n=4
2 Correct 0 ms 204 KB n=3
3 Correct 0 ms 204 KB n=3
4 Correct 0 ms 204 KB n=4
5 Correct 0 ms 204 KB n=4
6 Correct 0 ms 204 KB n=2
7 Correct 0 ms 204 KB n=5
8 Correct 1 ms 332 KB n=8
9 Correct 4 ms 588 KB n=14
10 Correct 2 ms 460 KB n=11
11 Correct 30 ms 3632 KB n=50000
12 Correct 36 ms 3932 KB n=50000
13 Correct 10 ms 900 KB n=10
14 Correct 26 ms 1380 KB n=685
15 Correct 27 ms 1512 KB n=623
16 Correct 17 ms 976 KB n=973

Subtask #3
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB n=4
2 Correct 0 ms 204 KB n=3
3 Correct 0 ms 204 KB n=3
4 Correct 0 ms 204 KB n=4
5 Correct 0 ms 204 KB n=4
6 Correct 0 ms 204 KB n=2
7 Correct 0 ms 204 KB n=5
8 Correct 1 ms 332 KB n=8
9 Correct 4 ms 588 KB n=14
10 Correct 2 ms 460 KB n=11
11 Correct 30 ms 3632 KB n=50000
12 Correct 36 ms 3932 KB n=50000
13 Correct 10 ms 900 KB n=10
14 Correct 26 ms 1380 KB n=685
15 Correct 27 ms 1512 KB n=623
16 Correct 17 ms 976 KB n=973
17 Correct 28 ms 1348 KB n=989
18 Correct 14 ms 928 KB n=563
19 Correct 23 ms 1208 KB n=592
20 Correct 25 ms 1228 KB n=938
21 Correct 18 ms 1036 KB n=747
22 Correct 21 ms 1088 KB n=991

Subtask #4
0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 262 ms 22520 KB n=1000000
2 Correct 159 ms 13440 KB n=666666
3 Correct 103 ms 12740 KB n=400000
4 Correct 193 ms 23720 KB n=285714
5 Correct 5 ms 812 KB n=20000
6 Correct 179 ms 19608 KB n=181818
7 Correct 3 ms 588 KB n=10000
8 Incorrect 1 ms 460 KB Jury has the answer but participant has not
9 Halted 0 ms 0 KB -

Subtask #5
0 / 51.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB n=4
2 Correct 0 ms 204 KB n=3
3 Correct 0 ms 204 KB n=3
4 Correct 0 ms 204 KB n=4
5 Correct 0 ms 204 KB n=4
6 Correct 0 ms 204 KB n=2
7 Correct 0 ms 204 KB n=5
8 Correct 1 ms 332 KB n=8
9 Correct 4 ms 588 KB n=14
10 Correct 2 ms 460 KB n=11
11 Correct 30 ms 3632 KB n=50000
12 Correct 36 ms 3932 KB n=50000
13 Correct 10 ms 900 KB n=10
14 Correct 26 ms 1380 KB n=685
15 Correct 27 ms 1512 KB n=623
16 Correct 17 ms 976 KB n=973
17 Correct 28 ms 1348 KB n=989
18 Correct 14 ms 928 KB n=563
19 Correct 23 ms 1208 KB n=592
20 Correct 25 ms 1228 KB n=938
21 Correct 18 ms 1036 KB n=747
22 Correct 21 ms 1088 KB n=991
23 Correct 262 ms 22520 KB n=1000000
24 Correct 159 ms 13440 KB n=666666
25 Correct 103 ms 12740 KB n=400000
26 Correct 193 ms 23720 KB n=285714
27 Correct 5 ms 812 KB n=20000
28 Correct 179 ms 19608 KB n=181818
29 Correct 3 ms 588 KB n=10000
30 Incorrect 1 ms 460 KB Jury has the answer but participant has not
31 Halted 0 ms 0 KB -