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Submission #334512

# Submission time Handle Problem Language Result Execution time Memory
334512 2020-12-09T09:48:51 Z juggernaut Gift (IZhO18_nicegift) C++14
100 / 100
 803 ms 141240 KB 
#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
ll n,k,sum,mx,i,a[1000001],mn,sz,res,cnt[1000001],j,tmp;
vector<pair<ll,ll>>vec[1000001];
vector<ll>ans[1000001];
bool flag;
int main(){
    scanf("%lld%lld",&n,&k);
    for(i=1;i<=n;i++)scanf("%lld",&a[i]),mx=max(mx,a[i]),sum+=a[i];
    if(sum%k!=0||mx>sum/k)return puts("-1"),0;
    tmp=0;
    for(i=1;i<=n;i++){
        tmp+=a[i];
        if(tmp>=sum/k){
            vec[sz++].push_back({a[i]-tmp+sum/k,i});
            tmp-=sum/k;
            if(tmp)vec[sz].push_back({tmp,i});
        }else vec[sz].push_back({a[i],i});
    }
  for(int i=0;i<sz;i++)reverse(vec[i].begin(),vec[i].end());
    while(!flag){
        mn=9e18;
        for(i=0;i<sz;i++)mn=min(mn,vec[i].back().first);
        cnt[res]=mn;
        flag=0;
        for(i=0;i<sz;i++){
            ans[res].push_back(vec[i].back().second);
            if(vec[i].back().first==mn)vec[i].pop_back();
            else vec[i].back().first-=mn;
            flag|=vec[i].empty();
        }
        res++;
    }
    printf("%lld\n",res);
    for(i=0;i<res;i++){
        printf("%lld",cnt[i]);
        for(j=0;j<k;j++)printf(" %lld",ans[i][j]);
        puts("");
    }
}

Compilation message

nicegift.cpp: In function 'int main()':
nicegift.cpp:9:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
    9 |     scanf("%lld%lld",&n,&k);
      |     ~~~~~^~~~~~~~~~~~~~~~~~
nicegift.cpp:10:27: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   10 |     for(i=1;i<=n;i++)scanf("%lld",&a[i]),mx=max(mx,a[i]),sum+=a[i];
      |                      ~~~~~^~~~~~~~~~~~~~

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 32 ms 47468 KB n=4
2 Correct 33 ms 47468 KB n=3
3 Correct 34 ms 47352 KB n=3
4 Correct 32 ms 47340 KB n=4
5 Correct 32 ms 47340 KB n=4
6 Correct 33 ms 47340 KB n=2

Subtask #2
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 32 ms 47468 KB n=4
2 Correct 33 ms 47468 KB n=3
3 Correct 34 ms 47352 KB n=3
4 Correct 32 ms 47340 KB n=4
5 Correct 32 ms 47340 KB n=4
6 Correct 33 ms 47340 KB n=2
7 Correct 32 ms 47340 KB n=5
8 Correct 31 ms 47340 KB n=8
9 Correct 30 ms 47340 KB n=14
10 Correct 31 ms 47256 KB n=11
11 Correct 79 ms 50912 KB n=50000
12 Correct 64 ms 50660 KB n=50000
13 Correct 33 ms 47340 KB n=10
14 Correct 32 ms 47340 KB n=685
15 Correct 33 ms 47340 KB n=623
16 Correct 32 ms 47340 KB n=973

Subtask #3
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 32 ms 47468 KB n=4
2 Correct 33 ms 47468 KB n=3
3 Correct 34 ms 47352 KB n=3
4 Correct 32 ms 47340 KB n=4
5 Correct 32 ms 47340 KB n=4
6 Correct 33 ms 47340 KB n=2
7 Correct 32 ms 47340 KB n=5
8 Correct 31 ms 47340 KB n=8
9 Correct 30 ms 47340 KB n=14
10 Correct 31 ms 47256 KB n=11
11 Correct 79 ms 50912 KB n=50000
12 Correct 64 ms 50660 KB n=50000
13 Correct 33 ms 47340 KB n=10
14 Correct 32 ms 47340 KB n=685
15 Correct 33 ms 47340 KB n=623
16 Correct 32 ms 47340 KB n=973
17 Correct 39 ms 47340 KB n=989
18 Correct 30 ms 47340 KB n=563
19 Correct 33 ms 47468 KB n=592
20 Correct 35 ms 47468 KB n=938
21 Correct 34 ms 47468 KB n=747
22 Correct 36 ms 47468 KB n=991

Subtask #4
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 556 ms 107576 KB n=1000000
2 Correct 335 ms 87364 KB n=666666
3 Correct 203 ms 72524 KB n=400000
4 Correct 475 ms 99040 KB n=285714
5 Correct 40 ms 48492 KB n=20000
6 Correct 431 ms 96380 KB n=181818
7 Correct 36 ms 47852 KB n=10000
8 Correct 80 ms 53848 KB n=6666
9 Correct 41 ms 47468 KB n=4000
10 Correct 304 ms 79724 KB n=2857
11 Correct 34 ms 47468 KB n=2000

Subtask #5
51.0 / 51.0

# Verdict Execution time Memory Grader output
1 Correct 32 ms 47468 KB n=4
2 Correct 33 ms 47468 KB n=3
3 Correct 34 ms 47352 KB n=3
4 Correct 32 ms 47340 KB n=4
5 Correct 32 ms 47340 KB n=4
6 Correct 33 ms 47340 KB n=2
7 Correct 32 ms 47340 KB n=5
8 Correct 31 ms 47340 KB n=8
9 Correct 30 ms 47340 KB n=14
10 Correct 31 ms 47256 KB n=11
11 Correct 79 ms 50912 KB n=50000
12 Correct 64 ms 50660 KB n=50000
13 Correct 33 ms 47340 KB n=10
14 Correct 32 ms 47340 KB n=685
15 Correct 33 ms 47340 KB n=623
16 Correct 32 ms 47340 KB n=973
17 Correct 39 ms 47340 KB n=989
18 Correct 30 ms 47340 KB n=563
19 Correct 33 ms 47468 KB n=592
20 Correct 35 ms 47468 KB n=938
21 Correct 34 ms 47468 KB n=747
22 Correct 36 ms 47468 KB n=991
23 Correct 556 ms 107576 KB n=1000000
24 Correct 335 ms 87364 KB n=666666
25 Correct 203 ms 72524 KB n=400000
26 Correct 475 ms 99040 KB n=285714
27 Correct 40 ms 48492 KB n=20000
28 Correct 431 ms 96380 KB n=181818
29 Correct 36 ms 47852 KB n=10000
30 Correct 80 ms 53848 KB n=6666
31 Correct 41 ms 47468 KB n=4000
32 Correct 304 ms 79724 KB n=2857
33 Correct 34 ms 47468 KB n=2000
34 Correct 47 ms 49256 KB n=23514
35 Correct 48 ms 49352 KB n=23514
36 Correct 32 ms 47340 KB n=940
37 Correct 33 ms 47340 KB n=2
38 Correct 144 ms 61924 KB n=100000
39 Correct 144 ms 61796 KB n=100000
40 Correct 32 ms 47340 KB n=10
41 Correct 33 ms 47340 KB n=100
42 Correct 39 ms 48108 KB n=1000
43 Correct 713 ms 137148 KB n=1000000
44 Correct 803 ms 141240 KB n=1000000
45 Correct 644 ms 126404 KB n=666666
46 Correct 525 ms 113996 KB n=400000
47 Correct 295 ms 75500 KB n=2336
48 Correct 465 ms 99552 KB n=285714
49 Correct 421 ms 96356 KB n=181818
50 Correct 333 ms 81792 KB n=40000
51 Correct 317 ms 79804 KB n=20000
52 Correct 304 ms 77916 KB n=10000
53 Correct 304 ms 84332 KB n=6666
54 Correct 302 ms 73196 KB n=4000
55 Correct 308 ms 79724 KB n=2857
56 Correct 286 ms 71916 KB n=2000