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Submission #40571

# Submission time Handle Problem Language Result Execution time Memory
40571 2018-02-05T02:35:05 Z Just_Solve_The_Problem Gift (IZhO18_nicegift) C++11
100 / 100
 733 ms 119920 KB 
#include <bits/stdc++.h>

using namespace std;

#define ll long long
#define pb push_back
#define pii pair < ll, ll >
#define fr first
#define sc second
#define mk make_pair

const int N = (int)1e6 + 7;

ll sum = 0;
ll a[N];
vector < vector < pii > > block;
vector < vector < ll > > ans;
vector < ll > ans1;
int pointer[N];

main() {
  int n; ll k; scanf("%d %lld", &n, &k);
  for (int i = 1; i <= n; i++) {
    scanf("%lld", &a[i]);
    sum += a[i];
  }
  if (sum % k != 0) {
    puts("-1");
    return 0;
  }
  sum /= k;
  vector < pii > vec;
  vector < ll > v;
  int in = 1;
  ll res = 0;
  while (in <= n) {
    if (res + a[in] > sum) {
      vec.pb(mk(a[in] - (res + a[in] - sum), in));
      a[in] = res + a[in] - sum;
      res = sum;
    } else {
      vec.pb(mk(a[in], in));
      res += a[in];
      in++;
    }
    if (res == sum) {
      res = 0;
      pointer[block.size()] = vec.size() - 1;
      block.pb(vec);
      vec.clear();
    }
  }
  sum *= k;
  while (sum > 0) {
    ll mn = 1e18;
    for (int i = 0; i < k; i++) {
      mn = min(mn, block[i][pointer[i]].fr);
    }
    sum -= k * mn;
    for (int i = 0; i < k; i++) {
      block[i][pointer[i]].fr -= mn;
      if (i > 0 && block[i][pointer[i]].sc == v.back()) {
        puts("-1");
        return 0;
      }
      v.pb(block[i][pointer[i]].sc);
      if (block[i][pointer[i]].fr == 0) {
        pointer[i]--;
      }
    }
    ans.pb(v);
    v.clear();
    ans1.pb(mn);
  }
  printf("%d\n", ans.size());
  for (int i = 0; i < ans.size(); i++) {
    printf("%lld ", ans1[i]);
    for (int j = 0; j < ans[i].size(); j++) {
      printf("%lld ", ans[i][j]);
    }
    printf("\n");
  }
}

Compilation message

nicegift.cpp:21:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
 main() {
      ^
nicegift.cpp: In function 'int main()':
nicegift.cpp:75:28: warning: format '%d' expects argument of type 'int', but argument 2 has type 'std::vector<std::vector<long long int> >::size_type {aka long unsigned int}' [-Wformat=]
   printf("%d\n", ans.size());
                            ^
nicegift.cpp:76:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for (int i = 0; i < ans.size(); i++) {
                     ^
nicegift.cpp:78:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for (int j = 0; j < ans[i].size(); j++) {
                       ^
nicegift.cpp:22:40: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   int n; ll k; scanf("%d %lld", &n, &k);
                                        ^
nicegift.cpp:24:25: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%lld", &a[i]);
                         ^

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 248 KB n=4
2 Correct 2 ms 352 KB n=3
3 Correct 2 ms 552 KB n=3
4 Correct 1 ms 552 KB n=4
5 Correct 2 ms 552 KB n=4
6 Correct 1 ms 552 KB n=2

Subtask #2
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 248 KB n=4
2 Correct 2 ms 352 KB n=3
3 Correct 2 ms 552 KB n=3
4 Correct 1 ms 552 KB n=4
5 Correct 2 ms 552 KB n=4
6 Correct 1 ms 552 KB n=2
7 Correct 2 ms 692 KB n=5
8 Correct 1 ms 692 KB n=8
9 Correct 2 ms 692 KB n=14
10 Correct 2 ms 692 KB n=11
11 Correct 28 ms 5560 KB n=50000
12 Correct 36 ms 5560 KB n=50000
13 Correct 2 ms 5560 KB n=10
14 Correct 3 ms 5560 KB n=685
15 Correct 2 ms 5560 KB n=623
16 Correct 2 ms 5560 KB n=973

Subtask #3
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 248 KB n=4
2 Correct 2 ms 352 KB n=3
3 Correct 2 ms 552 KB n=3
4 Correct 1 ms 552 KB n=4
5 Correct 2 ms 552 KB n=4
6 Correct 1 ms 552 KB n=2
7 Correct 2 ms 692 KB n=5
8 Correct 1 ms 692 KB n=8
9 Correct 2 ms 692 KB n=14
10 Correct 2 ms 692 KB n=11
11 Correct 28 ms 5560 KB n=50000
12 Correct 36 ms 5560 KB n=50000
13 Correct 2 ms 5560 KB n=10
14 Correct 3 ms 5560 KB n=685
15 Correct 2 ms 5560 KB n=623
16 Correct 2 ms 5560 KB n=973
17 Correct 2 ms 5560 KB n=989
18 Correct 2 ms 5560 KB n=563
19 Correct 3 ms 5560 KB n=592
20 Correct 3 ms 5560 KB n=938
21 Correct 2 ms 5560 KB n=747
22 Correct 3 ms 5560 KB n=991

Subtask #4
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 489 ms 77388 KB n=1000000
2 Correct 287 ms 77388 KB n=666666
3 Correct 150 ms 77388 KB n=400000
4 Correct 403 ms 77388 KB n=285714
5 Correct 10 ms 77388 KB n=20000
6 Correct 338 ms 77388 KB n=181818
7 Correct 8 ms 77388 KB n=10000
8 Correct 50 ms 77388 KB n=6666
9 Correct 3 ms 77388 KB n=4000
10 Correct 236 ms 77388 KB n=2857
11 Correct 6 ms 77388 KB n=2000

Subtask #5
51.0 / 51.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 248 KB n=4
2 Correct 2 ms 352 KB n=3
3 Correct 2 ms 552 KB n=3
4 Correct 1 ms 552 KB n=4
5 Correct 2 ms 552 KB n=4
6 Correct 1 ms 552 KB n=2
7 Correct 2 ms 692 KB n=5
8 Correct 1 ms 692 KB n=8
9 Correct 2 ms 692 KB n=14
10 Correct 2 ms 692 KB n=11
11 Correct 28 ms 5560 KB n=50000
12 Correct 36 ms 5560 KB n=50000
13 Correct 2 ms 5560 KB n=10
14 Correct 3 ms 5560 KB n=685
15 Correct 2 ms 5560 KB n=623
16 Correct 2 ms 5560 KB n=973
17 Correct 2 ms 5560 KB n=989
18 Correct 2 ms 5560 KB n=563
19 Correct 3 ms 5560 KB n=592
20 Correct 3 ms 5560 KB n=938
21 Correct 2 ms 5560 KB n=747
22 Correct 3 ms 5560 KB n=991
23 Correct 489 ms 77388 KB n=1000000
24 Correct 287 ms 77388 KB n=666666
25 Correct 150 ms 77388 KB n=400000
26 Correct 403 ms 77388 KB n=285714
27 Correct 10 ms 77388 KB n=20000
28 Correct 338 ms 77388 KB n=181818
29 Correct 8 ms 77388 KB n=10000
30 Correct 50 ms 77388 KB n=6666
31 Correct 3 ms 77388 KB n=4000
32 Correct 236 ms 77388 KB n=2857
33 Correct 6 ms 77388 KB n=2000
34 Correct 21 ms 77388 KB n=23514
35 Correct 16 ms 77388 KB n=23514
36 Correct 2 ms 77388 KB n=940
37 Correct 1 ms 77388 KB n=2
38 Correct 97 ms 77388 KB n=100000
39 Correct 97 ms 77388 KB n=100000
40 Correct 2 ms 77388 KB n=10
41 Correct 2 ms 77388 KB n=100
42 Correct 7 ms 77388 KB n=1000
43 Correct 654 ms 119056 KB n=1000000
44 Correct 733 ms 119920 KB n=1000000
45 Correct 597 ms 119920 KB n=666666
46 Correct 453 ms 119920 KB n=400000
47 Correct 220 ms 119920 KB n=2336
48 Correct 398 ms 119920 KB n=285714
49 Correct 337 ms 119920 KB n=181818
50 Correct 246 ms 119920 KB n=40000
51 Correct 239 ms 119920 KB n=20000
52 Correct 206 ms 119920 KB n=10000
53 Correct 234 ms 119920 KB n=6666
54 Correct 227 ms 119920 KB n=4000
55 Correct 205 ms 119920 KB n=2857
56 Correct 207 ms 119920 KB n=2000