Submission #9278

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
9278	2014-09-28T05:19:42 Z	Yoon	Your life (kriii2_Y)	C++	Compilation error	0 ms	0 KB

Y

#include <stdio.h>
#include <vector>
#include <queue>
using namespace std;
int N,M;
vector<pair<int,int>> adj[100010];
vector<int> dijkstra(int src)
{
	vector<int> dist(N+1,1234567890);
	dist[src]=0;
	priority_queue<pair<int,int>> pq;
	pq.push(make_pair(0,src));
	while(!pq.empty()){
		int cost=-pq.top().first;
		int here=pq.top().second;
		pq.pop();
		if(dist[here]<cost)continue;
		for(int i=0;i<adj[here].size();++i){
			int there=adj[here][i].first;
			int nextDist=cost+adj[here][i].second;
			if(dist[there]>nextDist){
				dist[there]=nextDist;
				pq.push(make_pair(-nextDist,there));
			}
		}
	}
	return dist;
}
int main()
{
	int i,j,a,b;
	scanf("%d %d",&N,&M);
	for(i=1;i<=M;i++){
		scanf("%d %d",&a,&b);
		adj[a].push_back(make_pair(b,1));
	}
	vector<int> shortest=dijkstra(1);
	int ret=shortest[N];
	if(ret==1234567899)printf("-1\n");
	else printf("%d\n",ret);
	
	return 0;
}

Compilation message

Y.cpp:6:20: error: '>>' should be '> >' within a nested template argument list
Y.cpp: In function 'std::vector<int> dijkstra(int)':
Y.cpp:11:29: error: '>>' should be '> >' within a nested template argument list
Y.cpp:18:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
Y.cpp: In function 'int main()':
Y.cpp:31:8: warning: unused variable 'j' [-Wunused-variable]
Y.cpp:32:22: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
Y.cpp:34:23: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]