Submission #568378

#	Time	Username	Problem	Language	Result	Execution time	Memory
568378		Trisanu_Das	Detecting Molecules (IOI16_molecules)	C++17	Compilation error	0 ms	0 KiB

molecules

#include <bits/stdc++.h>
#include "molecules.h"
using namespace std;
#define ff first
#define ss second

int find_subset(int l, int u, vector<int> w){
  vector<pair<int, int> > w_sort;
  int n = w.size();
  for(int i = 0, i < n; i++) w_sort.push_back({w[i], i});
  sort(w_sort.begin(), w_sort.end());
  int sum = 0;
  vector<int> ans;
  for(int i = 0; i < n; i++){
    sum += w_sort[i].ff;
    ans.push_back(w_sort[i].ss);
    if(l <= sum && sum <= u) return ans;
  }
  ans.clear();
  if(sum > l || w_sort[0].ff > r) return ans;
  int last = 0; sum = 0;
	for(int i = 0; i < n; i++) {
		if(sum + w_sort[i].ff > l) break;
		sum += w_sort[i].ff;
		last = i;
	}
	int len = last + 1; 
	for(int i = last + 1; i < n; i++) {
		sum -= w_sort[i - len].ff;
		sum += w_sort[i].ff;
		if(sum >= l) {
			for(int j = i - len + 1; j <= i; j++) ans.push_back(w_sort[j].ss);
			return ans;
		}
	}
	return ans;
}

Compilation message (stderr)

molecules.cpp:7:5: error: ambiguating new declaration of 'int find_subset(int, int, std::vector<int>)'
    7 | int find_subset(int l, int u, vector<int> w){
      |     ^~~~~~~~~~~
In file included from molecules.cpp:2:
molecules.h:5:18: note: old declaration 'std::vector<int> find_subset(int, int, std::vector<int>)'
    5 | std::vector<int> find_subset(int l, int u, std::vector<int> w);
      |                  ^~~~~~~~~~~
molecules.cpp: In function 'int find_subset(int, int, std::vector<int>)':
molecules.cpp:10:19: error: expected ';' before '<' token
   10 |   for(int i = 0, i < n; i++) w_sort.push_back({w[i], i});
      |                   ^~
      |                   ;
molecules.cpp:10:20: error: expected primary-expression before '<' token
   10 |   for(int i = 0, i < n; i++) w_sort.push_back({w[i], i});
      |                    ^
molecules.cpp:17:37: error: cannot convert 'std::vector<int>' to 'int' in return
   17 |     if(l <= sum && sum <= u) return ans;
      |                                     ^~~
molecules.cpp:20:32: error: 'r' was not declared in this scope
   20 |   if(sum > l || w_sort[0].ff > r) return ans;
      |                                ^
molecules.cpp:20:42: error: cannot convert 'std::vector<int>' to 'int' in return
   20 |   if(sum > l || w_sort[0].ff > r) return ans;
      |                                          ^~~
molecules.cpp:33:11: error: cannot convert 'std::vector<int>' to 'int' in return
   33 |    return ans;
      |           ^~~
molecules.cpp:36:9: error: cannot convert 'std::vector<int>' to 'int' in return
   36 |  return ans;
      |         ^~~