Submission #288808

#	Time	Username	Problem	Language	Result	Execution time	Memory
288808		Ruba_K	Detecting Molecules (IOI16_molecules)	C++14	69 / 100	1088 ms	12932 KiB

molecules

#include "molecules.h"

#include<bits/stdc++.h>

using namespace std ;

vector<int> find_subset(int l, int u, vector<int> w) {
    int n = w.size();
    deque<int>pos (n);

    iota(pos.begin() , pos.end() , 0);


    sort(pos.begin() , pos.end() , [w](int a , int b){
        return w[a] < w[b] ;

         });

    pos.push_back(0);
    sort(w.begin() , w.end());
    if(w[0] > u)return {};
    w.push_back((2 << 31) + 1);

    long long sum = 0 ;

    int idx = 0 ;

    deque<pair<int , int > > ret ;

    for(int i = 0 ; i < n ; i ++){
        ret.push_back({w[i] , pos[i]});

        sum += w[i];

        while(sum > u){
            sum -= ret.front().first ;

            ret.pop_front();
        }

        if(sum >= l && sum <= u){

            vector<int>ans ;

            for(auto f : ret)
                ans.push_back(f.second);
            sort(ans.begin() , ans.end());
            return ans ;
        }

    }
    return {};
}

Compilation message (stderr)

molecules.cpp: In function 'std::vector<int> find_subset(int, int, std::vector<int>)':
molecules.cpp:22:20: warning: result of '(2 << 31)' requires 34 bits to represent, but 'int' only has 32 bits [-Wshift-overflow=]
   22 |     w.push_back((2 << 31) + 1);
      |                  ~~^~~~~
molecules.cpp:26:9: warning: unused variable 'idx' [-Wunused-variable]
   26 |     int idx = 0 ;
      |         ^~~

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