oj.uz

Submission #482662

# Submission time Handle Problem Language Result Execution time Memory
482662 2021-10-26T02:44:34 Z robell Ice Hockey World Championship (CEOI15_bobek) C++14
10 / 100
 960 ms 137888 KB 
#pragma GCC optimize("O2")
#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
using namespace std;
using namespace __gnu_pbds;
typedef tree<int,null_type,less<int>,rb_tree_tag, tree_order_statistics_node_update> indexed_set;
typedef long long ll;
#define int long long
#define pb push_back
#define eb emplace_back
#define countbits __builtin_popcount
#define beg0 __builtin_clz
#define terminal0 __builtin_ctz
#define f first
#define s second
int mod=1e9+7;
void setIO(){
    ios::sync_with_stdio(0);
    cin.tie(0); cout.tie(0);
}
void setIO(string f){
	freopen((f+".in").c_str(),"r",stdin);
	freopen((f+".out").c_str(),"w",stdout);
	setIO();
}
ll N, M, c[40];
ll s1[(1<<20)], s2[(1<<20)];
vector<int> v1, v2;
unordered_map<ll,int> m;
unordered_set<ll> store;
vector<ll> vals;
vector<ll> counts={0};
void setup1(){
	for (int i=1;i<(1<<v1.size());i++){
		for (int j=0;j<v1.size();j++){
			if (i&(1<<j)){
				int n = i&(~(1<<j));
				s1[i]=s1[n]+v1[j];
				break;
			}
		}
	}
}
void setup2(){
	for (int i=1;i<(1<<v2.size());i++){
		for (int j=0;j<v2.size();j++){
			if (i&(1<<j)){
				int n = i&(~(1<<j));
				s2[i]=s2[n]+v2[j];
				break;
			}
		}
	}
}
int32_t main(){
	setIO(); cin >> N >> M; s1[0]=0;s2[0]=0;
	for (int i=0;i<N;i++){cin >> c[i];}
	for (int i=0;i<N/2;i++) v1.pb(c[i]);
	for (int i=N/2;i<N;i++) v2.pb(c[i]);
	setup1();setup2();
	for (int i=0;i<(1<<v1.size());i++){
		m[s1[i]]++;
		store.insert(s1[i]);
	}
	for (ll j:store) vals.pb(j);
	for (ll j:store) counts.pb(counts.back()+m[j]);
	ll res = 0;
	for (int i=0;i<(1<<v2.size());i++){
		ll diff = M-s2[i];
		int l=0,r=vals.size()-1;
		while (l!=r){
			int mid = (l+r+1)/2;
			if (vals[mid]<=diff) l=mid;
			else r=mid-1;
		}
		if (vals[r]<=diff){
			res+=counts[r+1];
		}else{
			res+=counts[r];
		}
	}
	cout << res << "\n";
}

Compilation message

bobek.cpp: In function 'void setup1()':
bobek.cpp:35:17: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   35 |   for (int j=0;j<v1.size();j++){
      |                ~^~~~~~~~~~
bobek.cpp: In function 'void setup2()':
bobek.cpp:46:17: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   46 |   for (int j=0;j<v2.size();j++){
      |                ~^~~~~~~~~~
bobek.cpp: In function 'void setIO(std::string)':
bobek.cpp:22:9: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   22 |  freopen((f+".in").c_str(),"r",stdin);
      |  ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
bobek.cpp:23:9: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   23 |  freopen((f+".out").c_str(),"w",stdout);
      |  ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct

Subtask #2
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 204 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 332 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 460 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 10 ms 3268 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #6
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 17 ms 4392 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #7
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 65 ms 15516 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #8
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 480 ms 72956 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #9
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 29 ms 9324 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #10
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 960 ms 137888 KB Output isn't correct
2 Halted 0 ms 0 KB -