Submission #798324

#	Time	Username	Problem	Language	Result	Execution time	Memory
798324		AndiR	Zamjena (COCI18_zamjena)	C++14	42 / 70	5 ms	4616 KiB

zamjena

#include <iostream>
#include <unordered_map>
#include <vector>

using namespace std;
const long long Nmax=50000;

long long n, ind, sol[Nmax*2];
string v[Nmax];
unordered_map <long long, long long> m;
vector <long long> ad[Nmax*2];
bool ok=1;

void dfs (long long nod, long long val){
    if (sol[nod]==0){
        sol[nod]=val;
        for (long long i=0; i<ad[nod].size(); i++)
            dfs(ad[nod][i], val);
    }
    else if (sol[nod]!=val){
        ok=0; //cout<<nod<<' '<<val<<' ';
    }
}
void eq (string &s, long long val){
    long long h=0;
    for (long long i=0; i<s.size(); i++)
        h=h*26+s[i]-'a';
    if (m.count(h)==0)
        m[h]=ind++;
    dfs(m[h], val+1);
}
void check (string &s1, string &s2){
    long long h1=0, h2=0;
    for (long long i=0; i<s1.size(); i++)
        h1=h1*26+s1[i]-'a';
    for (long long i=0; i<s2.size(); i++)
        h2=h2*26+s2[i]-'a';
    if (m.count(h1)==0)
        m[h1]=ind++;
    if (m.count(h2)==0)
        m[h2]=ind++;
    if (sol[m[h1]]!=0 && sol[m[h2]]!=0 && sol[m[h1]]!=sol[m[h2]])
        ok=0;
    else if (sol[m[h1]]==0 && sol[m[h2]]!=0)
        dfs(m[h1], sol[m[h2]]);
    else if (sol[m[h2]]==0 && sol[m[h1]]!=0)
        dfs(m[h2], sol[m[h1]]);
    ad[m[h1]].push_back(m[h2]);
    ad[m[h2]].push_back(m[h1]);
}
int main()
{
    cin>>n;
    for (long long i=0; i<n; i++)
        cin>>v[i];
    string s;
    for (long long i=0; i<n && ok; i++){
        cin>>s;
        long long v1=-1, v2=-1;
        if (v[i][0]<='9'){
            v1=0;
            for (int j=0; j<v[i].size(); j++)
                v1=v1*10+v[i][j]-'0';
        }
        if (s[0]<='9'){
            v2=0;
            for (int j=0; j<s.size(); j++)
                v2=v2*10+s[j]-'0';
        }
        if (v1!=-1 && v2!=-1 && v1!=v2)
            ok=0;
        else if (v1!=v2){
            if (v1==-1)
                eq(v[i], v2);
            else eq(s, v1);
        }
        else if (v1==-1)
            check(v[i], s);
    }
    if (ok)
        cout<<"DA";
    else cout<<"NE";
    return 0;
}

Compilation message (stderr)

zamjena.cpp: In function 'void dfs(long long int, long long int)':
zamjena.cpp:17:30: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   17 |         for (long long i=0; i<ad[nod].size(); i++)
      |                             ~^~~~~~~~~~~~~~~
zamjena.cpp: In function 'void eq(std::string&, long long int)':
zamjena.cpp:26:26: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   26 |     for (long long i=0; i<s.size(); i++)
      |                         ~^~~~~~~~~
zamjena.cpp: In function 'void check(std::string&, std::string&)':
zamjena.cpp:34:26: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   34 |     for (long long i=0; i<s1.size(); i++)
      |                         ~^~~~~~~~~~
zamjena.cpp:36:26: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   36 |     for (long long i=0; i<s2.size(); i++)
      |                         ~^~~~~~~~~~
zamjena.cpp: In function 'int main()':
zamjena.cpp:62:28: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   62 |             for (int j=0; j<v[i].size(); j++)
      |                           ~^~~~~~~~~~~~
zamjena.cpp:67:28: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   67 |             for (int j=0; j<s.size(); j++)
      |                           ~^~~~~~~~~

• Subtask 1: 14 / 14
• Subtask 2: 14 / 14
• Subtask 3: 14 / 14
• Subtask 4: 0 / 14
• Subtask 5: 0 / 14