제출 #985051

#제출 시각아이디문제언어결과실행 시간메모리
985051normankr07Detecting Molecules (IOI16_molecules)C++17
컴파일 에러
0 ms0 KiB
#define taskname "" #include "molecules.h" #include <bits/stdc++.h> using namespace std; using ll = long long; #ifndef LOCAL #define cerr \ if (0) \ cerr #endif const bool multitest = 0; int n, l, u; vector<int> w; std::vector<int> find_subset(int l, int u, std::vector<int> w) { for (int i = 1; i <= w.size(); i++) { if (l <= w[i - 1] && w[i - 1] <= u) { return vector<int>(i); } } vector<pair<int, int>> ww; for (int i = 1; i <= n; i++) { ww.push_back(make_pair(w[i - 1], i)); } sort(ww.begin(), ww.end()); ll sum = 0; while (ww.size() && ww.back().first > l) { ww.pop_back(); } vector<int> idans; while (sum < l) { if (sum > u) break; sum += ww.back().first; idans.push_back(ww.back().second); ww.pop_back(); } if (sum >= l && sum <= u) { sort(idans.begin(), idans.end()); return idans; } while (sum > u) { sum -= w[idans.back() - 1]; idans.pop_back(); } int i = 0; while (sum < l) { sum += ww[i].first; idans.push_back(ww[i].second); i++; } if (sum < l || sum > u) return vector<int>(); sort(idans.begin(), idans.end()); return idans; } void solve() { cin >> n >> l >> u; w.assign(n, 0); for (auto &v : w) cin >> v; auto ans = find_subset(l, u, w); for (auto v : ans) { cout << v << ' '; } } int32_t main() { ios_base::sync_with_stdio(0); cin.tie(0); if (fopen(taskname ".inp", "r")) { freopen(taskname ".inp", "r", stdin); freopen(taskname ".out", "w", stdout); } int tc = 1; if (multitest) cin >> tc; while (tc--) { solve(); cout << '\n'; } }

컴파일 시 표준 에러 (stderr) 메시지

molecules.cpp: In function 'std::vector<int> find_subset(int, int, std::vector<int>)':
molecules.cpp:20:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   20 |     for (int i = 1; i <= w.size(); i++)
      |                     ~~^~~~~~~~~~~
molecules.cpp: In function 'int32_t main()':
molecules.cpp:89:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   89 |         freopen(taskname ".inp", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
molecules.cpp:90:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   90 |         freopen(taskname ".out", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/bin/ld: /tmp/ccnEUVj9.o: in function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'; /tmp/cclnNEy9.o:molecules.cpp:(.text.startup+0x0): first defined here
collect2: error: ld returned 1 exit status