oj.uz

Submission #170881

# Submission time Handle Problem Language Result Execution time Memory
170881 2019-12-26T16:16:35 Z socho Ice Hockey World Championship (CEOI15_bobek) C++14
100 / 100
 418 ms 21000 KB 
#include "bits/stdc++.h"
using namespace std;

int main() {
	
	long long n, m;
	cin >> n >> m;
	
	vector<long long> vc(n);
	for (long long i=0; i<n; i++) cin >> vc[i];
	
	vector<long long> le, ri;
	for (long long i=0; i<n/2; i++) {
		le.push_back(vc[i]);
		// cout << "L " << i << endl;
	}
	for (long long i=n/2; i<n; i++) {
		ri.push_back(vc[i]);
		// cout << "R " << i << endl;
	}
	
	long long ls = le.size(), rs = ri.size();
	vector<long long> les, ris;
	for (long long i=0; i<(1<<ls); i++) {
		long long sm = 0;
		for (long long j=0; j<ls; j++) {
			if (i & (1 << j)) sm += le[j];
		}
		les.push_back(sm);
	}
	for (long long i=0; i<(1<<rs); i++) {
		long long sm = 0;
		for (long long j=0; j<rs; j++) {
			if (i & (1 << j)) sm += ri[j];
		}
		ris.push_back(sm);
	}
	
	sort(les.begin(), les.end());
	sort(ris.begin(), ris.end());
	reverse(ris.begin(), ris.end());
	
	long long valid = 0;
	long long pt = 0;
	
	for (int i=0; i<les.size(); i++) {
		long long mx = m - les[i];
		while (pt < ris.size() && ris[pt] > mx) pt++;
		valid += (ris.size() - pt);
	}
	
	cout << valid << endl;
	
	
}

Compilation message

bobek.cpp: In function 'int main()':
bobek.cpp:46:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for (int i=0; i<les.size(); i++) {
                ~^~~~~~~~~~~
bobek.cpp:48:13: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   while (pt < ris.size() && ris[pt] > mx) pt++;
          ~~~^~~~~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 256 KB Output is correct
2 Correct 2 ms 256 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 256 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 2 ms 376 KB Output is correct

Subtask #3
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 256 KB Output is correct
3 Correct 2 ms 360 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 380 KB Output is correct
6 Correct 3 ms 376 KB Output is correct
7 Correct 2 ms 376 KB Output is correct

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 0 ms 376 KB Output is correct
7 Correct 2 ms 376 KB Output is correct

Subtask #5
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 32 ms 2032 KB Output is correct
2 Correct 94 ms 5476 KB Output is correct
3 Correct 418 ms 20816 KB Output is correct
4 Correct 94 ms 5476 KB Output is correct
5 Correct 18 ms 1648 KB Output is correct
6 Correct 12 ms 1012 KB Output is correct
7 Correct 23 ms 1648 KB Output is correct

Subtask #6
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 45 ms 2920 KB Output is correct
2 Correct 34 ms 2156 KB Output is correct
3 Correct 168 ms 10588 KB Output is correct
4 Correct 2 ms 256 KB Output is correct
5 Correct 10 ms 1012 KB Output is correct
6 Correct 23 ms 1604 KB Output is correct
7 Correct 23 ms 1648 KB Output is correct

Subtask #7
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 69 ms 3624 KB Output is correct
2 Correct 142 ms 6664 KB Output is correct
3 Correct 142 ms 6668 KB Output is correct
4 Correct 2 ms 256 KB Output is correct
5 Correct 99 ms 6724 KB Output is correct
6 Correct 350 ms 20908 KB Output is correct
7 Correct 141 ms 6760 KB Output is correct

Subtask #8
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 292 ms 12916 KB Output is correct
2 Correct 34 ms 2152 KB Output is correct
3 Correct 12 ms 1012 KB Output is correct
4 Correct 1 ms 376 KB Output is correct
5 Correct 10 ms 1012 KB Output is correct
6 Correct 280 ms 12888 KB Output is correct
7 Correct 22 ms 1648 KB Output is correct

Subtask #9
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 34 ms 2028 KB Output is correct
2 Correct 93 ms 5480 KB Output is correct
3 Correct 12 ms 1012 KB Output is correct
4 Correct 12 ms 1012 KB Output is correct
5 Correct 107 ms 6624 KB Output is correct
6 Correct 33 ms 2032 KB Output is correct
7 Correct 387 ms 21000 KB Output is correct

Subtask #10
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 393 ms 20820 KB Output is correct
2 Correct 35 ms 2032 KB Output is correct
3 Correct 12 ms 1012 KB Output is correct
4 Correct 402 ms 20884 KB Output is correct
5 Correct 139 ms 10592 KB Output is correct
6 Correct 22 ms 1648 KB Output is correct
7 Correct 45 ms 2928 KB Output is correct