제출 #28682

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
28682		Shocking Hot (#68)	Alternative Mart (FXCUP2_mart)	C++14	1 / 1	773 ms	20080 KiB

mart

#include<bits/stdc++.h>
#define X first
#define Y second
using namespace std;
typedef pair<int,int> pii;
const int inf = 1e9;

int n, m, k, q, c[50005], vis[50005], ts;
pii d[50005][12];

vector<pii> adj[50005];
priority_queue<pair<pii,int> > pq;

bool upd (int I, pii V) {
	for(int i=0;i<11;i++) {
		if(d[I][i] < V) {
			pii T = d[I][i];
			d[I][i] = V;
			for(int j=i+1;j<11;j++) {
				if(T.Y == V.Y) return true;
				swap(d[I][j], T);
			}
			return true;
		}
		if(d[I][i].Y == V.Y) return false;
	}
	return false;
}

int main()
{
	scanf("%d%d%d%d",&n,&m,&k,&q);
	for(int i=1;i<=n;i++) {
		for(int j=0;j<11;j++) d[i][j] = pii(-inf, 1);
	}
	for(int i=1;i<=k;i++) {
		int T;
		scanf("%d",&T);
		upd(T, pii(0, -T));
		pq.push({pii(0, -T), T});
	}
	for(int i=1;i<=m;i++) {
		int A, B, C;
		scanf("%d%d%d",&A,&B,&C);
		adj[A].push_back({B, C});
		adj[B].push_back({A, C});
	}
	while(!pq.empty()) {
		pii V; int I; tie(V, I) = pq.top(); pq.pop();
		if(c[I] == 11 || d[I][c[I]] != V) continue;
		c[I]++;
		for(auto &T : adj[I]) {
			int A, B; tie(A, B) = T;
			pii X = pii(V.X-B, V.Y);
			if(upd(A, X)) pq.push({X, A});
		}
	}
	while(q--) {
		int A, M; ts++;
		scanf("%d%d",&A,&M);
		for(int i=0;i<M;i++) {
			int T;
			scanf("%d",&T);
			vis[T] = ts;
		}
		for(int i=0;i<11;i++) {
			if(vis[-d[A][i].Y] == ts) continue;
			printf("%d %d\n",-d[A][i].Y,-d[A][i].X);
			break;
		}
	}
}

컴파일 시 표준 에러 (stderr) 메시지

mart.cpp: In function 'int main()':
mart.cpp:32:31: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d%d%d%d",&n,&m,&k,&q);
                               ^
mart.cpp:38:17: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d",&T);
                 ^
mart.cpp:44:27: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d%d%d",&A,&B,&C);
                           ^
mart.cpp:60:22: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d%d",&A,&M);
                      ^
mart.cpp:63:18: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
    scanf("%d",&T);
                  ^

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