제출 #465192

#제출 시각아이디문제언어결과실행 시간메모리
465192dattranxxxDetecting Molecules (IOI16_molecules)C++11
컴파일 에러
0 ms0 KiB
/* * Author : shora */ #include <bits/stdc++.h> #define print(_v) for (auto &_ : _v) {cerr << _ << ' ';} cerr << endl; #include "molecules.h" using namespace std; using ll = long long; const int oo = 1e9; const int N = 2e5; map<int, ll> dp[N]; map<int, bool> t[N]; int n; ll call(int i, int l, vector<int>& a) { if (i == -1) return l <= 0 ? 0 : oo; if (dp[i].count(l)) return dp[i][l]; ll x = call(i-1, l-a[i], a) + a[i], y = call(i-1, l, a); if (x < y) { t[i][l] = 1; return dp[i][l] = x; } else { t[i][l] = 0; return dp[i][l] = y; } } vector<int> find_subset(int l, int u, std::vector<int> w) { n = w.size(); call(n-1, l, w); vector<int> res; if (dp[n-1][l] <= u) { n = n-1; while (n) { if (t[n][l]) { res.push_back(n+1); l -= a[n]; } n--; } } return res; }

컴파일 시 표준 에러 (stderr) 메시지

molecules.cpp: In function 'std::vector<int> find_subset(int, int, std::vector<int>)':
molecules.cpp:37:11: error: 'a' was not declared in this scope
   37 |      l -= a[n];
      |           ^