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Submission #48537

# Submission time Handle Problem Language Result Execution time Memory
48537 2018-05-15T14:08:29 Z Pajaraja Gift (IZhO18_nicegift) C++17
30 / 100
 2000 ms 18580 KB 
#include <bits/stdc++.h>
using namespace std;
int gcd(int a,int b)
{
	if(a==0) return b;
	return gcd(b%a,a);
}
int main()
{
	int n,k,t,cnt=0;
	long long sum=0;
	scanf("%d%d",&n,&k);
	priority_queue<pair<int,int> > pq,pq1;
	for(int i=0;i<n;i++) {scanf("%d",&t); pq.push(make_pair(t,i+1)); pq1.push(make_pair(t,i+1)); sum+=t;}
	if(sum<=100000)
	{
	while(pq.size()>=k)
	{
		stack<pair<int,int> > st;
		for(int i=0;i<k;i++) {st.push(pq.top()); pq.pop();}
		for(int i=0;i<k;i++) {st.top().first--; if(st.top().first!=0) pq.push(st.top()); st.pop();}
		cnt++;
	}
	if(!pq.empty()) {printf("-1"); return 0;}
	printf("%d\n",cnt);
	while(pq1.size()>=k)
	{
		stack<pair<int,int> > st;
		printf("1 ");
		for(int i=0;i<k;i++) {st.push(pq1.top()); pq1.pop();}
		for(int i=0;i<k;i++) {st.top().first--; if(st.top().first!=0) pq1.push(st.top()); printf("%d ",st.top().second); st.pop();}
		printf("\n");
	}
	}
	else
	{
	int f=k/(gcd(n,k));
	while(pq.size()>=k)
	{
		stack<pair<int,int> > st;
		for(int i=0;i<k;i++) {st.push(pq.top()); pq.pop();}
		for(int i=0;i<k;i++) {st.top().first-=f; if(st.top().first!=0) pq.push(st.top()); st.pop();}
		cnt++;
	}
	if(!pq.empty()) {printf("-1"); return 0;}
	printf("%d\n",cnt);
	while(pq1.size()>=k)
	{
		stack<pair<int,int> > st;
		for(int i=0;i<k;i++) {st.push(pq1.top()); pq1.pop();}
		printf("%d ",f);
		for(int i=0;i<k;i++) {st.top().first-=f; if(st.top().first!=0) pq1.push(st.top()); printf("%d ",st.top().second); st.pop();}
		printf("\n");
	}
	}
}

Compilation message

nicegift.cpp: In function 'int main()':
nicegift.cpp:17:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  while(pq.size()>=k)
        ~~~~~~~~~^~~
nicegift.cpp:26:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  while(pq1.size()>=k)
        ~~~~~~~~~~^~~
nicegift.cpp:38:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  while(pq.size()>=k)
        ~~~~~~~~~^~~
nicegift.cpp:47:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  while(pq1.size()>=k)
        ~~~~~~~~~~^~~
nicegift.cpp:12:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d%d",&n,&k);
  ~~~~~^~~~~~~~~~~~~~
nicegift.cpp:14:29: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  for(int i=0;i<n;i++) {scanf("%d",&t); pq.push(make_pair(t,i+1)); pq1.push(make_pair(t,i+1)); sum+=t;}
                        ~~~~~^~~~~~~~~

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 432 KB n=3
4 Correct 2 ms 464 KB n=4
5 Correct 2 ms 464 KB n=4
6 Correct 2 ms 532 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 432 KB n=3
4 Correct 2 ms 464 KB n=4
5 Correct 2 ms 464 KB n=4
6 Correct 2 ms 532 KB n=2
7 Correct 2 ms 532 KB n=5
8 Correct 3 ms 532 KB n=8
9 Correct 11 ms 668 KB n=14
10 Correct 7 ms 668 KB n=11
11 Correct 66 ms 2304 KB n=50000
12 Correct 61 ms 2304 KB n=50000
13 Correct 34 ms 2304 KB n=10
14 Correct 40 ms 2304 KB n=685
15 Correct 45 ms 2304 KB n=623
16 Correct 25 ms 2304 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 432 KB n=3
4 Correct 2 ms 464 KB n=4
5 Correct 2 ms 464 KB n=4
6 Correct 2 ms 532 KB n=2
7 Correct 2 ms 532 KB n=5
8 Correct 3 ms 532 KB n=8
9 Correct 11 ms 668 KB n=14
10 Correct 7 ms 668 KB n=11
11 Correct 66 ms 2304 KB n=50000
12 Correct 61 ms 2304 KB n=50000
13 Correct 34 ms 2304 KB n=10
14 Correct 40 ms 2304 KB n=685
15 Correct 45 ms 2304 KB n=623
16 Correct 25 ms 2304 KB n=973
17 Correct 41 ms 2304 KB n=989
18 Correct 19 ms 2304 KB n=563
19 Correct 29 ms 2304 KB n=592
20 Correct 29 ms 2304 KB n=938
21 Correct 23 ms 2304 KB n=747
22 Correct 26 ms 2304 KB n=991

Subtask #4
0 / 19.0

# Verdict Execution time Memory Grader output
1 Execution timed out 2066 ms 18580 KB Time limit exceeded
2 Halted 0 ms 0 KB -

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 432 KB n=3
4 Correct 2 ms 464 KB n=4
5 Correct 2 ms 464 KB n=4
6 Correct 2 ms 532 KB n=2
7 Correct 2 ms 532 KB n=5
8 Correct 3 ms 532 KB n=8
9 Correct 11 ms 668 KB n=14
10 Correct 7 ms 668 KB n=11
11 Correct 66 ms 2304 KB n=50000
12 Correct 61 ms 2304 KB n=50000
13 Correct 34 ms 2304 KB n=10
14 Correct 40 ms 2304 KB n=685
15 Correct 45 ms 2304 KB n=623
16 Correct 25 ms 2304 KB n=973
17 Correct 41 ms 2304 KB n=989
18 Correct 19 ms 2304 KB n=563
19 Correct 29 ms 2304 KB n=592
20 Correct 29 ms 2304 KB n=938
21 Correct 23 ms 2304 KB n=747
22 Correct 26 ms 2304 KB n=991
23 Execution timed out 2066 ms 18580 KB Time limit exceeded
24 Halted 0 ms 0 KB -