Submission #261720

#	Time	Username	Problem	Language	Result	Execution time	Memory
261720		lyc	Colors (RMI18_colors)	C++14	47 / 100	3065 ms	6776 KiB

colors

#include <bits/stdc++.h>
using namespace std;

#define TRACE(x) cerr << #x << " :: " << x << endl
#define _ << " " <<
#define SZ(x) (int)(x).size()
#define ALL(x) (x).begin(),(x).end()
#define FOR(i,a,b) for(int i=(a);i<=(b);++i)
#define RFOR(i,a,b) for (int i=(a);i>=(b);--i)

const int mxN = 150005;
const int inf = 2e5+5;

int N, M, A[mxN], B[mxN];
vector<int> al[mxN];

bool reach[mxN];

int main() {
    ios::sync_with_stdio(false); cin.tie(0); cout.tie(0);
    
    int TC; cin >> TC;
    while (TC--) {
		cin >> N >> M;
		FOR(i,1,N){ cin >> A[i]; }
		FOR(i,1,N){ cin >> B[i]; }
		
		FOR(i,1,N) al[i].clear();
		FOR(i,1,M){
			int U, V; cin >> U >> V;
			al[U].push_back(V);
			al[V].push_back(U);
		}
		
		bool ok = 1;
		FOR(u,1,N) ok &= (A[u] >= B[u]);
		FOR(s,1,N){
			if (!ok) break;
			queue<int> q;
			memset(reach,0,sizeof reach);
			q.push(s), reach[s] = 1;
			while (!q.empty()) {
				int u = q.front(); q.pop();
				for (int& v : al[u]) if (!reach[v] && A[v] >= B[s] && B[v] <= B[s]) {
					reach[v] = 1;
					q.push(v);
				}
			}
			
			bool cur = 0;
			FOR(v,1,N) if (reach[v] && A[v] == B[s]) { cur = 1; break; }
			ok &= cur;
		}
		cout << ok << '\n';
	}
}

• Subtask 1: 15 / 15
• Subtask 2: 7 / 7
• Subtask 3: 8 / 8
• Subtask 4: 0 / 15
• Subtask 5: 7 / 7
• Subtask 6: 0 / 16
• Subtask 7: 10 / 10
• Subtask 8: 0 / 22