Submission #596019

#	Time	Username	Problem	Language	Result	Execution time	Memory
596019		proma	Parachute rings (IOI12_rings)	C++17	0 / 100	4099 ms	30776 KiB

rings

#include <bits/stdc++.h>

using namespace std;

int n, cnt = 0;
vector <int> deg;
vector <vector <int>> g;

void Init(int N_) {
    n = N_;
    deg.resize(n, 0);
    g.resize(n);
}

void Link(int A, int B) {
    deg[A] ++;
    deg[B] ++;
    g[A].push_back(B);
    g[B].push_back(A);
    if (deg[A] == 3) cnt ++;
    if (deg[B] == 3) cnt ++;
}

int CountCritical() {
    int res = 0;
    for (int v = 0; v < n; v ++) {
        int cur = 0;
        deg[v] = 0;
        for (auto i: g[v]) {
            deg[i] --;
        }
        int flag = 1;
        for (int i = 0; i < n; i ++) {
            if (deg[i] > 2) flag = 0;
        }
        res += flag;
        deg[v] = g[v].size();
        for (auto i: g[v]) {
            deg[i] ++;
        }
    }
    return res;
}

Compilation message (stderr)

rings.cpp: In function 'int CountCritical()':
rings.cpp:27:13: warning: unused variable 'cur' [-Wunused-variable]
   27 |         int cur = 0;
      |             ^~~

• Subtask 1: 0 / 20
• Subtask 2: 0 / 17
• Subtask 3: 0 / 18
• Subtask 4: 0 / 14
• Subtask 5: 0 / 31