제출 #341902

#제출 시각아이디문제언어결과실행 시간메모리
341902DrearyJokeDetecting Molecules (IOI16_molecules)C++17
9 / 100
1 ms384 KiB
#include<bits/stdc++.h> #include <ext/pb_ds/assoc_container.hpp> #include "molecules.h" using namespace std; using namespace __gnu_pbds; typedef long long ll; typedef long double ld; typedef pair<int, int> pii; typedef pair<ll, ll> pll; typedef vector<int> vi; typedef vector<vector<int>> vvi; typedef vector<ll> vll; typedef vector<vector<ll>> vvll; typedef vector<bool> vb; typedef tree<ll, null_type, less_equal<ll>, rb_tree_tag, tree_order_statistics_node_update> indexed_set; template <typename T, typename U> std::istream&operator>>(std::istream&i, pair<T,U>&p) {i >> p.x >> p.y; return i;} template<typename T>std::istream&operator>>(std::istream&i,vector<T>&t) {for(auto&v:t){i>>v;}return i;} template <typename T, typename U> std::ostream&operator<<(std::ostream&o, const pair<T,U>&p) {o << p.x << ' ' << p.y; return o;} template<typename T>std::ostream&operator<<(std::ostream&o,const vector<T>&t) {if(t.empty())o<<'\n';for(size_t i=0;i<t.size();++i){o<<t[i]<<" \n"[i == t.size()-1];}return o;} #define deb(x) cout << '>' << #x << ':' << x << endl; #define all(v) v.begin(),v.end() #define rall(v) v.rbegin(),v.rend() #define END '\n' #define inf 9e18 #define ff first #define ss second #define pb push_back std::vector<int> find_subset(int l, int u, std::vector<int> w) { int n = w.size(); vector<pair<ll, int>> A(n); for (int i = 0; i < n; ++i) A[i] = {w[i], i}; sort(all(A)); auto it = lower_bound(all(A), pair<ll, int>(l, 0)); vi ans; if (it != A.end() && it->ff >= l && it->ff <= u) { ans.pb(it->ss); return ans; } int lo = 0, hi; if (it == A.end() || it->ff > u) hi = (it - A.begin()); // cout << hi << END; ll sum = 0; set<int> s; for (int i = 0; i < hi; ++i) { sum += A[i].ff; s.insert(A[i].ss); if (sum >= l && sum <= u) { for (auto u: s) ans.pb(u); return ans; } if (sum > u) { for (int j = 0; j < i; ++j) { ll nsum = sum - A[j].ff; if (nsum >= l && nsum <= u) { s.erase(A[j].ss); for (auto u: s) ans.pb(u); return ans; } } } } return ans; } // void solve(){ // } // int main() // { // ios_base::sync_with_stdio(false); cin.tie(NULL); cout.tie(NULL); // int t = 1; // cin >> t; // while(t--){ // solve(); // } // return 0; // }

컴파일 시 표준 에러 (stderr) 메시지

molecules.cpp: In function 'std::vector<int> find_subset(int, int, std::vector<int>)':
molecules.cpp:42:9: warning: unused variable 'lo' [-Wunused-variable]
   42 |     int lo = 0, hi;
      |         ^~
molecules.cpp:47:23: warning: 'hi' may be used uninitialized in this function [-Wmaybe-uninitialized]
   47 |     for (int i = 0; i < hi; ++i) {
      |                     ~~^~~~
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