Submission #145659

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
145659	2019-08-20 17:25:10	Xylofo	Sky Walking (IOI19_walk)	C++14	Compilation error	0 ms	0 KiB

walk

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#include "walk.h"
#include <bits/stdc++.h>
using namespace std;
#define rep(i, a, b) for(int i = a; i < (b); ++i)
#define trav(a, x) for(auto& a : x)
#define all(x) begin(x), end(x)
#define sz(x) (int)(x).size()
#define eb emplace_back
typedef long long ll;
typedef pair<int, int> pii;
typedef vector<int> vi;
const ll INF =1e18;
#define debug(...) //ignore
template<class T>
auto dijkstra(int source, vector<vector<pair<int, T>>> &g) {
  int n = sz(g);
  vector<T> dist(n, numeric_limits<T>::max());
  vector<pair<int,T> > dad(n, {-1, 0});
  priority_queue<pair<T,int> > pq;
  dist[source] = 0;
  pq.emplace(0,source);
  while(!pq.empty()) {
    T d; int x;
 
 
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Compilation message (stderr)

walk.cpp: In function 'auto dijkstra(int, std::vector<std::vector<std::pair<int, T> > >&)':
walk.cpp:35:14: warning: decomposition declaration only available with -std=c++1z or -std=gnu++1z
     for(auto [y,w] : g[x]) {
              ^
walk.cpp:43:14: error: missing template arguments before '{' token
   return pair{dist, dad};
              ^
walk.cpp:43:14: error: expected ';' before '{' token
walk.cpp:43:24: error: expected ';' before '}' token
   return pair{dist, dad};
                        ^
walk.cpp: In lambda function:
walk.cpp:116:9: warning: decomposition declaration only available with -std=c++1z or -std=gnu++1z
     auto[dist, dad] = dijkstra(at(s,0),E);
         ^
walk.cpp: In instantiation of 'auto dijkstra(int, std::vector<std::vector<std::pair<int, T> > >&) [with T = long long int]':
walk.cpp:116:41:   required from here
walk.cpp:43:19: warning: left operand of comma operator has no effect [-Wunused-value]
   return pair{dist, dad};
               ~~~~^~~~~
walk.cpp:43:15: warning: right operand of comma operator has no effect [-Wunused-value]
   return pair{dist, dad};
               ^~~~
walk.cpp:116:9: error: 'void <anonymous>' has incomplete type
     auto[dist, dad] = dijkstra(at(s,0),E);
         ^~~~~~~~~~~