Submission #288789

#	Time	Username	Problem	Language	Result	Execution time	Memory
288789		Ruba_K	Detecting Molecules (IOI16_molecules)	C++14	0 / 100	1 ms	384 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());

    w.push_back((2 << 31) + 1);

    long long sum = 0 ;

    int idx = 0 ;

    deque<int> ret ;
    while(idx <= n && sum <= u){
        sum += w[idx];
        ret.push_back(pos[idx++]);
    }

    idx -- ;

    sum -= w[idx--];

    w.pop_back();
    ret.pop_back();


    int p1 = 0 , p2 = idx ;

    while(p2 < n && !(sum >= l && sum <= u)){
        ret.pop_front();
        sum -= w[p1++];
        sum += w[p2];
        ret.push_back(pos[p2++]);
    }

    vector<int>ret2 ;

    for(auto f : ret)
        ret2.push_back(f);

    if(sum >= l && sum <= u)
        return ret2 ;
    else return vector<int>();

}

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);
      |                  ~~^~~~~

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