Submission #131631

#	Time	Username	Problem	Language	Result	Execution time	Memory
131631		neki	Detecting Molecules (IOI16_molecules)	C++14	46 / 100	1074 ms	1568 KiB

molecules

#include "molecules.h"

#include <bits/stdc++.h>

#define loop(i, a, b) for(int i=a;i<b;i++)
#define cc(a) cout<< a << endl;
using namespace std;

std::vector<int> find_subset(int l, int u, std::vector<int> w) {
    map<int, int> dp;dp[0]=-1;
    vector<int> ans;
    loop(i, 1, w.size()+1){
        auto dp2=dp;
        for(auto&& j: dp2) if(j.first+w[i-1]<=u and dp[j.first+w[i-1]]==0) dp[j.first+w[i-1]]=i;
        auto it=dp.lower_bound(l);
        if(it!=dp.end() and it->second!=0 and l<=it->first and it->first<=u){
            int cnt=it->first;
            while(cnt!=0){
                ans.push_back(dp[cnt]-1);
                cnt-=w[dp[cnt]-1];
            }
            break;
        }
    }
    return ans;
}

Compilation message (stderr)

molecules.cpp: In function 'std::vector<int> find_subset(int, int, std::vector<int>)':
molecules.cpp:5:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
 #define loop(i, a, b) for(int i=a;i<b;i++)
molecules.cpp:12:10:
     loop(i, 1, w.size()+1){
          ~~~~~~~~~~~~~~~~           
molecules.cpp:12:5: note: in expansion of macro 'loop'
     loop(i, 1, w.size()+1){
     ^~~~

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