Submission #846144

#	Time	Username	Problem	Language	Result	Execution time	Memory
846144		vjudge1	KOVANICE (COI15_kovanice)	C++98	50 / 100	100 ms	11776 KiB

kovanice

#include <bits/stdc++.h>
using namespace std;
#pragma optimize "DostSeferoğlu"
#pragma GCC optimize("unroll-loops,Ofast")
#pragma GCC target("avx2,tune=native")
#define int long long
#define pii pair<int,int>
#define bg begin
#define vi vector<int>
#define endl '\n'
#define vvi vector<vi> 
#define vp vector<pii>
#define sp << " " << 
#define ff first
#define ss second
#define brake {cout << "OK\n";return;}
#define debug(x) {cout << #x << ": "; for (auto it : x) cout << it << " ";cout << endl;}
#define FF(xxx,sss,yyy) for (int xxx=sss;xxx<=yyy;++xxx)
#define F(xx,yy) for (int xx=1;xx<=yy;++xx)
#define pb push_back 
const int inf = 1e18;
const int MOD = 998244353;   
const int N = 3e5+1;


vi dad(N);

int find(int x) {
    if (x == dad[x])  return x;
    return dad[x] = find(dad[x]);
}
void unite(int x,int y) {
    dad[find(x)] = find(y);
}

void solve() {
    int n,m,k;
    cin >> n >> m >> k;
    if (n == 2) {
        set<int> betters,worses;
        F(i,m) dad[i] = i;
        dad[0]=0;
        while (k--) {
            string s;
            cin >> s;
            string n1,n2;
            int seeneq = 0,seensm=0,seenbg=0;
            for (auto c : s) {
                if (c == '=') {
                    seeneq = 1;
                    continue;
                }
                if (c == '<') {
                    seensm = 1;
                    continue;
                }
                if (c == '>') {
                    seenbg = 1;
                    continue;
                }
                if (seeneq || seenbg || seensm) {
                    n2+=c;
                }else n1+=c;
            }
            int x = stoi(n1);
            int y = stoi(n2);
            if (seeneq) {
                unite(x,y);
            }
            else if (seensm){
                betters.insert(x);
                worses.insert(y);
            }
            else{
                betters.insert(y);
                worses.insert(x);
            }
        }
        set<int> goods,bads;
        for (auto it : betters) goods.insert(find(it));
        for (auto it : worses) bads.insert(find(it));
        for (int i=1;i<=m;i++) {
            if (goods.count(find(i))) cout << "K1"; 
            else if (bads.count(find(i))) cout << "K2";
            else cout << "?";
            if (i<m) cout << '\n';
        }
    }
    else cout << -1 << endl;
}                 






signed main() { 
    ios_base::sync_with_stdio(0);cin.tie(0);
    #ifdef Local
        freopen("input.txt", "r", stdin);
        freopen("output.txt", "w", stdout);  
    #endif
    int t = 1;
    //cin >> t; 
    while (t --> 0) solve();
}

Compilation message (stderr)

kovanice.cpp:3: warning: ignoring '#pragma optimize ' [-Wunknown-pragmas]
    3 | #pragma optimize "DostSeferoğlu"
      |

• Subtask 1: 10 / 10
• Subtask 2: 40 / 40
• Subtask 3: 0 / 10
• Subtask 4: 0 / 40