Submission #366261

#	Time	Username	Problem	Language	Result	Execution time	Memory
366261		wiwiho	Zamjena (COCI18_zamjena)	C++14	70 / 70	109 ms	6892 KiB

zamjena

#include <bits/stdc++.h>

#define eb emplace_back
#define printv(a, b) {\
bool ps = false;\
for(auto pv : a){\
    if(ps) b << ' '; ps = true;\
    b << pv;\
}\
b << "\n";\
}

using namespace std;

map<string, int> id;
int ts = 1;

void read(vector<int>& a){
    for(int i = 0; i < a.size(); i++){
        string s;
        cin >> s;
        if('0' <= s[0] && s[0] <= '9'){
            a[i] = -stoi(s);
            continue;
        }
        if(id.find(s) == id.end()) id[s] = ++ts;
        a[i] = id[s];
    }
}

vector<vector<int>> g;
vector<int> v;

void dfs(int now, int tv){
    v[now] = tv;
    for(int i : g[now]){
        if(v[i] != -1) continue;
        dfs(i, tv);
    }
}

int main(){
    ios_base::sync_with_stdio(false);
    cin.tie(0);

    int n;
    cin >> n;

    map<string, int> id;
    vector<int> a(n), b(n);
    read(a);
    read(b);
    //printv(a, cerr);
    //printv(b, cerr);

    g.resize(ts + 1);
    for(int i = 0; i < n; i++){
        if(a[i] < 0 || b[i] < 0) continue;
        g[a[i]].eb(b[i]);
        g[b[i]].eb(a[i]);
    }
    
    v.resize(ts + 1, -1);
    for(int i = 0; i < n; i++){
        //cerr << i << "  ";
        //printv(v, cerr);
        if(a[i] < 0 && b[i] < 0){
            if(a[i] != b[i]) return cout << "NE\n", 0;
            continue;
        }
        if(a[i] < 0){
            if(v[b[i]] != -1){
                //cerr << i << " " << v[b[i]] << " " << -a[i] << "\n";
                if(v[b[i]] != -a[i]) return cout << "NE\n", 0;
                continue;
            }
            dfs(b[i], -a[i]);
        }
        if(b[i] < 0){
            if(v[a[i]] != -1){
                if(v[a[i]] != -b[i]) return cout << "NE\n", 0;
                //cerr << i << " " << v[a[i]] << " " << -b[i] << "\n";
                continue;
            }
            dfs(a[i], -b[i]);
        }
    }

    cout << "DA\n";

    return 0;
}

Compilation message (stderr)

zamjena.cpp: In function 'void read(std::vector<int>&)':
zamjena.cpp:19:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   19 |     for(int i = 0; i < a.size(); i++){
      |                    ~~^~~~~~~~~~

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