Submission #1003425

#	Time	Username	Problem	Language	Result	Execution time	Memory
1003425		Lini	Kemija (COCI22_kemija)	C++14	50 / 50	1 ms	348 KiB

Main

#include <iostream>
#include <vector>
#include <cctype>
using namespace std;

vector<vector<pair<char,long>>> eq;

int main() {
    long n;
    string chem;
    cin>>n;
    eq.resize(n);
    long sec=1;
    long molno=1;
    long elno=1;
    bool found;
    for (long i=0; i<n; i++){
        sec=1;
        molno=1;
        elno=1;
        found=false;
        cin>>chem;
        
        for (long k=0; k<chem.length(); ++k){
            char el=chem[k];
            if(isdigit(el)){
              molno=el-'0';
              continue;
            }
            if (el=='-'){
                sec=-1;
                continue;
            }
            if (el=='+' or el=='>'){
                molno=1;
                if (isdigit(chem[k+1])){
                    molno = chem[k+1]-'0';
                    ++k;
                    continue;
                }
            }
            elno=1;
            found=false;
            if (eq[i].size()!=0){
                for (long j=0; j<eq[i].size(); j++){
                    if (eq[i][j].first == el){
                        if (isdigit(chem[k+1])){
                            elno=chem[k+1]-'0';
                            ++k;
                        }
//                        cout<<el<<k<<": "<<elno<<"*"<<molno<<"*"<<sec<<endl;
                        eq[i][j].second += elno*molno*sec;
                        found=true;
                    }
                }
                if (found) {continue;}
            }

            if (el!='-' and el!='>' and el!='+' and not isdigit(el)){
                pair <char, long> p;
                p.first=el;
                if (isdigit(chem[k+1])){
                            elno=chem[k+1]-'0';
                            ++k;
                        }
//                cout<<el<<k<<": "<<elno<<"*"<<molno<<"*"<<sec<<endl;
                p.second=elno*molno*sec;
                eq[i].push_back(p);
            }
        }
        //cout<<eq[i].size()<<endl;
        for (long x=0; x<eq[i].size(); ++x){
            pair<char, long> elem=eq[i][x];
    //        cout<<elem.first<<", "<<elem.second<<endl;
          
        }
    }
    bool balanced;
    for (long l=0; l<n; ++l){
        balanced=true;
        for (pair<char, long> e : eq[l]){
            if (e.second!=0){
                balanced=false;
                break;
            }
        }
        if (balanced){cout<<"DA"<<endl;}
        else{cout<<"NE"<<endl;}
    }

    return 0;
}

Compilation message (stderr)

Main.cpp: In function 'int main()':
Main.cpp:24:25: warning: comparison of integer expressions of different signedness: 'long int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   24 |         for (long k=0; k<chem.length(); ++k){
      |                        ~^~~~~~~~~~~~~~
Main.cpp:45:33: warning: comparison of integer expressions of different signedness: 'long int' and 'std::vector<std::pair<char, long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   45 |                 for (long j=0; j<eq[i].size(); j++){
      |                                ~^~~~~~~~~~~~~
Main.cpp:72:25: warning: comparison of integer expressions of different signedness: 'long int' and 'std::vector<std::pair<char, long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   72 |         for (long x=0; x<eq[i].size(); ++x){
      |                        ~^~~~~~~~~~~~~
Main.cpp:73:30: warning: variable 'elem' set but not used [-Wunused-but-set-variable]
   73 |             pair<char, long> elem=eq[i][x];
      |                              ^~~~

• Subtask 1: 10 / 10
• Subtask 2: 10 / 10
• Subtask 3: 30 / 30