Submission #671239

#	Time	Username	Problem	Language	Result	Execution time	Memory
671239		4EVER	Zamjena (COCI18_zamjena)	C++11	42 / 70	59 ms	6224 KiB

zamjena

/******************************
*    author : @hihihihi       *
*    date : 12 / 12 / 2022    *
******************************/

#include <bits/stdc++.h>
// #pragma GCC optimize("O2")
// #pragma GCC target("avx,avx2,fma")
// #pragma GCC optimize ("O3,unroll-loops,no-stack-protector")
// #pragma GCC target ("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")
using namespace std;
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());

// template
#define PB push_back
#define ALL(i_) i_.begin(), i_.end()
#define LOG2(x_) (31 - __builtin_clz(x_))
#define getBit(x_, i_) ((x_ >> i_) & (ll) 1)
#define rd(l_, r_) (l_ + rng() % (r_ - l_ + 1))
#define FOR(i_, a_, b_)  for(int i_ = (int) (a_); i_ <= (int) (b_); ++i_)
#define FORD(i_, a_, b_) for(int i_ = (int) (a_); i_ >= (int) (b_); --i_)
// debugger 
void __print(int x) {cerr << x;}
void __print(long x) {cerr << x;}
void __print(long long x) {cerr << x;}
void __print(unsigned x) {cerr << x;}
void __print(unsigned long x) {cerr << x;}
void __print(unsigned long long x) {cerr << x;}
void __print(float x) {cerr << x;}
void __print(double x) {cerr << x;}
void __print(long double x) {cerr << x;}
void __print(char x) {cerr << '\'' << x << '\'';}
void __print(const char *x) {cerr << '\"' << x << '\"';}
void __print(const string &x) {cerr << '\"' << x << '\"';}
void __print(bool x) {cerr << (x ? "true" : "false");}

template<typename T, typename V>
void __print(const pair<T, V> &x) {cerr << '{'; __print(x.first); cerr << ','; __print(x.second); cerr << '}';}
template<typename T>
void __print(const T &x) {int f = 0; cerr << '{'; for (auto &i: x) cerr << (f++ ? "," : ""), __print(i); cerr << "}";}
void _print() {cerr << "]\n";}
template <typename T, typename... V>
void _print(T t, V... v) {__print(t); if (sizeof...(v)) cerr << ", "; _print(v...);}
#ifndef DEBUG
#define debug(x...) cerr << "[" << #x << "] = ["; _print(x)
#else
#define debug(x...)
#endif
 
typedef long long ll;
typedef long double ld;

template<class X, class Y> bool minimize(X &x, const Y &y){
    X eps = 1e-9;
    if (x > y + eps) {
        x = y;
        return 1;
    }
    return 0;
}

template<class X, class Y> bool maximize(X &x, const Y &y) {
    X eps = 1e-9;
    if (x + eps < y) {
        x = y;
        return 1;
    }
    return 0;
}

template<class T> T Abs(const T &x) { return (x < 0 ? -x : x); }
template<class T> using heap_min = priority_queue<T, vector<T>, greater<T>>;
template<class T> using heap_max = priority_queue<T>;

const int mod = (int) 1e9 + 7;

template<class X, class Y> void Add(X &x, const Y &y){
    x += y;
    if(x >= mod) x -= mod;
    if(x < 0) x += mod;
}

const int oo = (int) 1e9 + 99;
const array<int, 2> dxy8[] = { {-1, 0}, {1, 0}, {0, 1}, {0, -1}, {1, -1}, {1, 1}, {-1, 1}, {-1, -1} };
const array<int, 2> dxy4[] = { {-1, 0}, {1, 0}, {0, 1}, {0, -1} };

const int maxn = (int) 50011;
const int LOG = (int) LOG2(maxn) + 3;

void File(){
    #define TASK ""
    if(fopen(TASK".inp", "r")) {
        freopen(TASK".inp", "r", stdin);
        freopen(TASK".out", "w", stdout);
    }
}

int n;
string a[maxn], b[maxn];

void ReadInput(){
    cin >> n;
    FOR(i, 1, n) cin >> a[i];
    FOR(i, 1, n) cin >> b[i];
}

bool isNumber(string &s){
    for(auto x : s) if(!(x >= '0' && x <= '9')) return 0;
    return 1;
}

map<string, int> mp;
int root[2 * maxn];

int getRoot(int u){
    return ((root[u] == u) ? u : (root[u] = getRoot(root[u])));
}

void Join(int u, int v){
    u = getRoot(u);
    v = getRoot(v);
    if(u != v) root[v] = u;
}

int num[maxn];

void Solve(){
    FOR(i, 1, 2 * n) root[i] = i;
    int cnt = 0;
    FOR(i, 1, n) {
        if(mp.find(a[i]) == mp.end()) mp[a[i]] = ++cnt, num[cnt] = isNumber(a[i]);
    }
    FOR(i, 1, n){
        if(isNumber(a[i]) && isNumber(b[i])){
            if(a[i] != b[i]){
                cout << "NE";
                return;
            }
        }
        else{
            int v = (mp.find(b[i]) == mp.end()) ? -1 : mp[b[i]];
            if(v == -1 || !num[getRoot(mp[b[i]])]){
                if(v == -1) mp[b[i]] = ++cnt;
                Join(mp[a[i]], mp[b[i]]);
                if(isNumber(a[i]) || isNumber(b[i])) num[getRoot(mp[a[i]])] = 1;
            }
            else{
                int u = getRoot(mp[a[i]]);
                int v = getRoot(mp[b[i]]);
                if(num[u] && num[v] && u != v){
                    cout << "NE";
                    return;
                }
            }
        }
    }
    cout << "DA";
}

int main(){
    ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
    File();
    ReadInput();
    Solve();
    cerr << "\nTime elapsed: " << 1000.0 * clock() / CLOCKS_PER_SEC << " ms.\n";
    return 0;
}

Compilation message (stderr)

zamjena.cpp: In function 'void File()':
zamjena.cpp:93:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   93 |         freopen(TASK".inp", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
zamjena.cpp:94:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   94 |         freopen(TASK".out", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

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