Submission #156523

#	Time	Username	Problem	Language	Result	Execution time	Memory
156523		a_player	Detecting Molecules (IOI16_molecules)	C++14	31 / 100	64 ms	65540 KiB

molecules

#include <bits/stdc++.h>

#define f first
#define s second
#define mp make_pair
#define pb push_back

using namespace std;

//typedef long long ll;

pair<int,int> dp[10001][10001];
int v[10001];

int N,uu,ll;

bool ric(int n,int val){
	if(val>=uu&&val<=ll){
    dp[n][val].f=1;
      dp[n][val].s=-2;
       return 1;
    }
	if(n==N)return 0;
	if(val>ll)return 0;
	if(dp[n][val].f!=-1)return dp[n][val].f;
	if(ric(n+1,val)){
		dp[n][val].f=1;
		dp[n][val].s=0;
		return 1;
		}
	else if(ric(n+1,val+v[n])){
		dp[n][val].f=1;
		dp[n][val].s=1;
		return 1;
		}
		else {
			dp[n][val].f=0;
			dp[n][val].s=-1;
			return 0;
			}
			return 0;
	}
vector<int> find_subset(int l,int u,vector<int> w){
  uu=l;
ll=u;
  N=w.size();
	for(int i=0;i<w.size();i++)
	for(int j=0;j<u;j++)dp[i][j]=mp(-1,-1);
    for(int i=0;i<w.size();i++)v[i]=w[i];
	ric(0,0);
  vector<int> sol;
	if(dp[0][0].f==0)return sol;
	int val=0;
	int n=0;
	while(dp[n][val].s!=-2){
		if(dp[n][val].s==1){
			sol.push_back(n);
			val+=v[n];
			n++;
			}else n++;
		}
		
		
	return sol;
}

Compilation message (stderr)

molecules.cpp: In function 'std::vector<int> find_subset(int, int, std::vector<int>)':
molecules.cpp:47:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i=0;i<w.size();i++)
              ~^~~~~~~~~
molecules.cpp:49:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int i=0;i<w.size();i++)v[i]=w[i];
                 ~^~~~~~~~~

• Subtask 1: 9 / 9
• Subtask 2: 10 / 10
• Subtask 3: 12 / 12
• Subtask 4: 0 / 15
• Subtask 5: 0 / 23
• Subtask 6: 0 / 31