Submission #209531

#	Time	Username	Problem	Language	Result	Execution time	Memory
209531		model_code	Island (NOI18_island)	C++17	100 / 100	95 ms	3576 KiB

island

#include <bits/stdc++.h>
using namespace std;
const int MAXN = 200004;
int N, M, cnt[MAXN], fac[MAXN];
int main() {
	scanf("%d%d", &N, &M);
	for (int i = 0, u, v; i < N+M-1; ++i) {
		scanf("%d%d", &u, &v);
		cnt[u-1]++;
		cnt[v-1]++;
	}
	for (int i = 0; i < N+M; ++i) {
		fac[cnt[i]-1]++;
	}
	for (int i = N+M-1; i >= 1; --i) {
		if (fac[i] > 0) {
			printf("%d %d\n", i, fac[i]);
			fac[i-1] += fac[i];
		}
		
	}

}

Compilation message (stderr)

island.cpp: In function 'int main()':
island.cpp:6:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d%d", &N, &M);
  ~~~~~^~~~~~~~~~~~~~~~
island.cpp:8:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d%d", &u, &v);
   ~~~~~^~~~~~~~~~~~~~~~

• Subtask 1: 7 / 7
• Subtask 2: 20 / 20
• Subtask 3: 31 / 31
• Subtask 4: 42 / 42