Submission #573713

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
573713	2022-06-07T05:47:30 Z	Devigo	Experimental Charges (NOI19_charges)	C++14	14 / 100	204 ms	156976 KB

charges

#include "bits/stdc++.h"
using namespace std;
#define int long long
 
const int w = 1000050;
int n, m;
char c;
vector<int> parent((int) 1e7), siz((int) 1e7, 1);
 
int findpar(int x) {
    if(x == parent[x]) return x;
    return parent[x] = findpar(parent[x]);
}
 
void unite(int x, int y) {
    x = findpar(x);
    y = findpar(y);
 
    if(x == y) return;
    if(siz[y] > siz[x]) swap(x, y);
 
    parent[y] = x;
    siz[x] += siz[y];
}
 
signed main() {
    cin >> n >> m;
    for(int i = 0; i < (int) 1e7; ++i) parent[i] = i;
 
    int x, y;
    while(m--) {
        cin >> c; cin >> x >> y;
        if(c == 'A') {
            unite(x, y + w);
            unite(x + w, y);
        } else if(c == 'R') {
            unite(x, y);
            unite(x + w, y + w);
        } else {
            int p, q, r;
            p = findpar(x);
            q = findpar(y);
            r = findpar(x + w);
            //s = findpar(y + w);
 
            //if(p == q && p == s) cout << "?";
            if (p == q) cout << "R";
            else if (p == r) cout << "A";
            else cout << "?";
            cout << "\n";
        }
    }
}

Subtask #1
0 / 7.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	69 ms	156748 KB	Output is correct
2	Incorrect	67 ms	156824 KB	Output isn't correct
3	Halted	0 ms	0 KB	-

Subtask #2
0 / 11.0

#	Verdict	Execution time	Memory	Grader output
1	Incorrect	163 ms	156876 KB	Output isn't correct
2	Halted	0 ms	0 KB	-

Subtask #3
14.0 / 14.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	192 ms	156924 KB	Output is correct
2	Correct	200 ms	156952 KB	Output is correct
3	Correct	204 ms	156976 KB	Output is correct
4	Correct	172 ms	156908 KB	Output is correct
5	Correct	183 ms	156948 KB	Output is correct