Submission #1001952

#	Time	Username	Problem	Language	Result	Execution time	Memory
1001952		ayankarimova	Detecting Molecules (IOI16_molecules)	C++14	Compilation error	0 ms	0 KiB

molecules

#include "molecules.h"
#include <bits/stdc++.h>
using namespace std;
#define ll long long
std::vector<int> find_subset(int l, int u, std::vector<int> w) {
    vector<int>ans;
    map<ll, ll>mp;
    map<ll, vector<ll>>mp1;
    for(int i=0; i<w.size(); i++){
        mp[w[i]]++;
        mp1[w[i]].push_back(i);
    }
    //cout<<mp[6]<<endl;
    for(auto i:mp){
        ll num=(l+i.first-1)/i.first;
        if(num<=i.second && num*i.first<=u && num*i.first>=l){
            for(auto j:mp1[i.first]){
                ans.push_back(j);
                if(ans.size()==num) break;
            }
                //cout<<1<<endl;
            return ans;
        }
            if(mp.count(i.first+1)>0){
                ll cur=l-i.second*i.first;
                ll num1=(cur+(i.first+1)-1)/(i.first+1);
                if(num1<=mp[i.first+1] && i.second*i.first+num1*(i.first+1)<=u && i.second*i.first+num1*(i.first+1)>=l && u-l>=1){
                    for(auto j:mp1[i.first]){
                        ans.push_back(j);
                        if(ans.size()==i.second) break;
                    }
                    for(auto j:mp1[i.first+1]){
                        ans.push_back(j);
                        if(ans.size()==i.second+num1) break;
                    }
                    //cout<<2<<endl;
                    return ans;
                }
            }
            if(mp.count(i.first-1)>0 &&&& u-l>=1){
                ll cur=l-i.second*i.first;
                ll num1=(cur+(i.first-1)-1)/(i.first-1);
                if(num1<=mp[i.first-1] && i.second*i.first+num1*(i.first-1)<=u && i.second*i.first+num1*(i.first-1)>=l){
                    for(auto j:mp1[i.first]){
                        ans.push_back(j);
                        if(ans.size()==i.second) break;
                    }
                    for(auto j:mp1[i.first-1]){
                        ans.push_back(j);
                        if(ans.size()==i.second+num1) break;
                    }
                    //cout<<2<<endl;
                    return ans;
                }
       }
        }

    return ans;
}
/*
{} []
7
13 14
2 2 3 3 3 4 4
*/

Compilation message (stderr)

molecules.cpp: In function 'std::vector<int> find_subset(int, int, std::vector<int>)':
molecules.cpp:9:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    9 |     for(int i=0; i<w.size(); i++){
      |                  ~^~~~~~~~~
molecules.cpp:19:30: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'long long int' [-Wsign-compare]
   19 |                 if(ans.size()==num) break;
      |                    ~~~~~~~~~~^~~~~
molecules.cpp:30:38: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'long long int' [-Wsign-compare]
   30 |                         if(ans.size()==i.second) break;
      |                            ~~~~~~~~~~^~~~~~~~~~
molecules.cpp:34:38: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'long long int' [-Wsign-compare]
   34 |                         if(ans.size()==i.second+num1) break;
      |                            ~~~~~~~~~~^~~~~~~~~~~~~~~
molecules.cpp:40:44: warning: pointer of type 'void *' used in arithmetic [-Wpointer-arith]
   40 |             if(mp.count(i.first-1)>0 &&&& u-l>=1){
      |                                        ~~~~^~
molecules.cpp:40:46: error: ISO C++ forbids comparison between pointer and integer [-fpermissive]
   40 |             if(mp.count(i.first-1)>0 &&&& u-l>=1){
      |                                        ~~~~~~^~~
molecules.cpp:46:38: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'long long int' [-Wsign-compare]
   46 |                         if(ans.size()==i.second) break;
      |                            ~~~~~~~~~~^~~~~~~~~~
molecules.cpp:50:38: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'long long int' [-Wsign-compare]
   50 |                         if(ans.size()==i.second+num1) break;
      |                            ~~~~~~~~~~^~~~~~~~~~~~~~~
molecules.cpp:40:43: error: label 'u' used but not defined
   40 |             if(mp.count(i.first-1)>0 &&&& u-l>=1){
      |                                           ^