Submission #286200

#	Time	Username	Problem	Language	Result	Execution time	Memory
286200		spdskatr	Viruses (BOI20_viruses)	C++14	11 / 100	1 ms	256 KiB

Viruses

#include <cstdio>
#include <cstdlib>
#include <algorithm>
#include <vector>

using namespace std;

int G, N, M;
long long dp[105];
vector<int> rec[105];
vector<int> mut[105];
vector<int> nice[105];

int main() {
	scanf("%d %d %d", &G, &N, &M);
	for (int i = 0; i < N; i++) {
		int a, k;
		scanf("%d %d", &a, &k);
		rec[a].push_back(i);
		for (int j = 0; j < k; j++) {
			int v;
			scanf("%d", &v);
			mut[i].push_back(v);
		}
	}
	dp[0] = dp[1] = 1;
	for (int i = 2; i < G; i++) dp[i] = -1;
	for (int t = 0; t < G; t++) {
		for (int g = 2; g < G; g++) {
			for (int i : rec[g]) {
				int rip = 0;
				long long val = 0;
				for (int v : mut[i]) {
					if (dp[v] == -1) rip = 1;
					val += dp[v];
				}
				if (rip) continue;
				if (dp[g] == -1) dp[g] = val;
				else dp[g] = min(dp[g], val);
			}
		}
	}
	for (int i = 2; i < G; i++) {
		if (dp[i] == -1) {
			printf("YES\n");
		} else {
			printf("NO %lld\n", dp[i]);
		}
	}
}

Compilation message (stderr)

Viruses.cpp: In function 'int main()':
Viruses.cpp:15:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   15 |  scanf("%d %d %d", &G, &N, &M);
      |  ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
Viruses.cpp:18:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   18 |   scanf("%d %d", &a, &k);
      |   ~~~~~^~~~~~~~~~~~~~~~~
Viruses.cpp:22:9: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   22 |    scanf("%d", &v);
      |    ~~~~~^~~~~~~~~~

• Subtask 1: 11 / 11
• Subtask 2: 0 / 14
• Subtask 3: 0 / 25
• Subtask 4: 0 / 32
• Subtask 5: 0 / 18