Submission #239261

#	Time	Username	Problem	Language	Result	Execution time	Memory
239261		urd05	Detecting Molecules (IOI16_molecules)	C++14	100 / 100	86 ms	8696 KiB

molecules

#include <bits/stdc++.h>
using namespace std;

long long dp[10001][170];

bool val(int x,int y) {
    return (dp[x][y/64]>>(y%64))&1;
}

typedef pair<long long,int> P;

vector<int> find_subset(int l, int u,vector<int> w) {
    vector<P> copy(w.size());
    for(int i=0;i<w.size();i++) {
        copy[i]=P(w[i],i);
    }
    sort(w.begin(),w.end());
    sort(copy.begin(),copy.end());
    long long psum[200001];
    psum[0]=0;
    int n=w.size();
    for(int i=1;i<=n;i++) {
        psum[i]=psum[i-1]+w[i-1];
    }
    for(int j=0;j<n;j++) {
        auto iter=lower_bound(psum+j+1,psum+n+1,l+psum[j]);
        if (iter!=psum+n+1&&(*iter)<=u+psum[j]) {
            int i=lower_bound(psum+j+1,psum+n+1,l+psum[j])-psum;
            vector<int> ret;
            for(int k=j;k<i;k++) {
                ret.push_back(copy[k].second);
            }
            return ret;
        }
    }
    vector<int> ret;
    return ret;
}

Compilation message (stderr)

molecules.cpp: In function 'std::vector<int> find_subset(int, int, std::vector<int>)':
molecules.cpp:14:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int i=0;i<w.size();i++) {
                 ~^~~~~~~~~

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