Submission #209533

#	Time	Username	Problem	Language	Result	Execution time	Memory
209533		model_code	Island (NOI18_island)	C++17	100 / 100	101 ms	2812 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);
		if (cnt[u-1]++ > 1) 
		printf("%d 1\n", cnt[u-1]-1);
		if (cnt[v-1]++ > 1)
		printf("%d 1\n", cnt[v-1]-1);
	}
}

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