Submission #526792

#	Time	Username	Problem	Language	Result	Execution time	Memory
526792		zhangjishen	Crocodile's Underground City (IOI11_crocodile)	C++98	Compilation error	0 ms	0 KiB

crocodile

#include<bits/stdc++.h>
using namespace std;

#define mp make_pair
#define pb push_back
#define fi first
#define se second
template<typename T> bool chkmin(T &a, T b){return b < a ? a = b, 1 : 0;}
template<typename T> bool chkmax(T &a, T b){return b > a ? a = b, 1 : 0;}
typedef long long ll;
typedef pair<int, int> pii;
const int MAXN = 1e5 + 10, inf = 2e9, MAXM = 1e6 + 10;

int n, m, k, ext[MAXN], a[MAXM], b[MAXM], c[MAXM];
int g[MAXN], f[MAXN];
vector<pii> adj[MAXN];

priority_queue<pii, vector<pii>, greater<pii> > q;
void dijkstra(){
	for(int i = 1; i <= n; i++)
		g[i] = f[i] = inf;
	for(int i = 1; i <= k; i++){
		int u = ext[i];
		g[u] = f[u] = 0; q.push(mp(0, u));
	}
	while(!q.empty()){
		pii p = q.top(); q.pop();
		int u = p.se;
		if(p.fi != f[u]) continue;
		for(int i = 0; i < (int)adj[u].size(); i++){
			int v = adj[u][i].fi, w = adj[u][i].se;
			if(f[u] + w < g[v]){
				f[v] = g[v]; 
				if(f[v] != inf)
					q.push(mp(f[v], v));
				g[v] = f[u] + w;
			}else if(chkmin(f[v], f[u] + w))
				q.push(mp(f[v], v));
		}
	}
}

int main(){
	// input
	scanf("%d %d %d", &n, &m, &k);
	for(int i = 1; i <= m; i++){
		scanf("%d %d", &a[i], &b[i]);
		a[i]++; b[i]++;
	}
	for(int i = 1; i <= m; i++){
		scanf("%d", &c[i]);
		adj[a[i]].pb(mp(b[i], c[i]));
		adj[b[i]].pb(mp(a[i], c[i]));
	}
	for(int i = 1; i <= k; i++){
		scanf("%d", &ext[i]);
		ext[i]++;
	}
	// dijkstra
	dijkstra();
	printf("%d\n", f[1]);
}

Compilation message (stderr)

crocodile.cpp: In function 'int main()':
crocodile.cpp:45:7: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   45 |  scanf("%d %d %d", &n, &m, &k);
      |  ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
crocodile.cpp:47:8: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   47 |   scanf("%d %d", &a[i], &b[i]);
      |   ~~~~~^~~~~~~~~~~~~~~~~~~~~~~
crocodile.cpp:51:8: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   51 |   scanf("%d", &c[i]);
      |   ~~~~~^~~~~~~~~~~~~
crocodile.cpp:56:8: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   56 |   scanf("%d", &ext[i]);
      |   ~~~~~^~~~~~~~~~~~~~~
/usr/bin/ld: /tmp/cczfAEGD.o: in function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'; /tmp/ccZZaJqA.o:crocodile.cpp:(.text.startup+0x0): first defined here
/usr/bin/ld: /tmp/cczfAEGD.o: in function `main':
grader.cpp:(.text.startup+0x36): undefined reference to `travel_plan(int, int, int (*) [2], int*, int, int*)'
collect2: error: ld returned 1 exit status