Submission #586447

#	Time	Username	Problem	Language	Result	Execution time	Memory
586447		M_W	Journey (NOI18_journey)	C++17	20 / 100	1 ms	340 KiB

journey

#include <bits/stdc++.h>
#define ii pair<int, int>
using namespace std;
const int md = 500000000;
vector<ii> adj[505];
int dp[10001][505];
int main(){
	int N, M, H;
	scanf("%d %d %d", &N, &M, &H);
	for(int i = 1; i < N; i++){
		for(int j = 1, u, w; j <= H; j++){
			scanf("%d %d", &u, &w);
			adj[i].push_back({u + 1, w});
		}
	}
	for(auto [x, w] : adj[1]) dp[x][min(501, w)]++;
	for(int i = 2; i <= N; i++){
		for(int j = 0; j < M; j++){
			if(j > 0) dp[i][j] = min(dp[i][j] + dp[i][j - 1], md);
			for(auto [x, w] : adj[i]){
				dp[x][min(501, j + w)] += dp[i][j];
				dp[x][min(501, j + w)] = min(dp[x][min(501, j + w)], md);
			}
			// printf(">> %d %d : %d\n", i, j, dp[i][j]);
		}
	}
	for(int i = 0; i < M; i++) printf("%d ", min(dp[N][i], md));
}

Compilation message (stderr)

journey.cpp: In function 'int main()':
journey.cpp:9:7: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
    9 |  scanf("%d %d %d", &N, &M, &H);
      |  ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
journey.cpp:12:9: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   12 |    scanf("%d %d", &u, &w);
      |    ~~~~~^~~~~~~~~~~~~~~~~

• Subtask 1: 20 / 20
• Subtask 2: 0 / 23
• Subtask 3: 0 / 26
• Subtask 4: 0 / 31