Submission #133354

#	Time	Username	Problem	Language	Result	Execution time	Memory
133354		rajarshi_basu	Detecting Molecules (IOI16_molecules)	C++14	Compilation error	0 ms	0 KiB

molecules

#include <iostream>
#include <vector>
#include <set>
#include <iomanip>
#include <algorithm>
#include <functional>
#include <stdio.h>
#include <cmath>
#include <queue>
#include <string>
#include <map>
#include <unordered_map>
#include <fstream>
#include <complex>
#include <random>
#include <stack>
#include <chrono>
#include <set>
 
#define FOR(i,n) for(int i=0;i<n;i++)
#define FORE(i,a,b) for(int i=a;i<=b;i++)
#define ll long long int
#define vi vector<ll>
#define ii pair<int,int>
#define pb push_back
#define mp make_pair
#define ff first
#define ss second
#define pll pair<ll,ll>
#define cd complex<double> 
#define ld long double
#define pld pair<ld,ld>
#define iii pair<ii,int>
#define vv vector
 
using namespace std;

const int MAXN = 500000 + 10;

vi find_subset(int l,int u,vi w){
	int lptr = 0;
	vv<ii> ids;
	FOR(i,n)ids.pb({w[i],i});
	sort(ids.begin(), ids.end());
	ll sum = 0;
	FOR(i,n){
		sum += w[i].ff;
		if(l <= sum and sum <= u){
			vi t;
			FORE(j,lptr,i){
				t.pb(w[j].ss);
			}
			sort(t.begin(), t.end());
			return t;
		}
		while(sum > u){
			sum -= w[lptr++].ff;
			if(lptr > i)break;
		}
	}
	vi x;
	return x;
}

Compilation message (stderr)

molecules.cpp: In function 'std::vector<long long int> find_subset(int, int, std::vector<long long int>)':
molecules.cpp:43:8: error: 'n' was not declared in this scope
  FOR(i,n)ids.pb({w[i],i});
        ^
molecules.cpp:20:32: note: in definition of macro 'FOR'
 #define FOR(i,n) for(int i=0;i<n;i++)
                                ^
molecules.cpp:46:8: error: 'n' was not declared in this scope
  FOR(i,n){
        ^
molecules.cpp:20:32: note: in definition of macro 'FOR'
 #define FOR(i,n) for(int i=0;i<n;i++)
                                ^
molecules.cpp:27:12: error: request for member 'first' in 'w.std::vector<long long int>::operator[](((std::vector<long long int>::size_type)i))', which is of non-class type '__gnu_cxx::__alloc_traits<std::allocator<long long int> >::value_type {aka long long int}'
 #define ff first
            ^
molecules.cpp:47:15: note: in expansion of macro 'ff'
   sum += w[i].ff;
               ^~
molecules.cpp:28:12: error: request for member 'second' in 'w.std::vector<long long int>::operator[](((std::vector<long long int>::size_type)j))', which is of non-class type '__gnu_cxx::__alloc_traits<std::allocator<long long int> >::value_type {aka long long int}'
 #define ss second
            ^
molecules.cpp:51:15: note: in expansion of macro 'ss'
     t.pb(w[j].ss);
               ^~
molecules.cpp:27:12: error: request for member 'first' in 'w.std::vector<long long int>::operator[](((std::vector<long long int>::size_type)(lptr ++)))', which is of non-class type '__gnu_cxx::__alloc_traits<std::allocator<long long int> >::value_type {aka long long int}'
 #define ff first
            ^
molecules.cpp:57:21: note: in expansion of macro 'ff'
    sum -= w[lptr++].ff;
                     ^~