Submission #114312

#	Time	Username	Problem	Language	Result	Execution time	Memory
114312		MohamedAhmed04	Ceste (COCI17_ceste)	C++14	64 / 160	219 ms	16240 KiB

ceste

#include <bits/stdc++.h>

using namespace std;

const int MAXN = 110 , MAXT = MAXN * MAXN;

struct edge
{
    int to , time , cost ;
    edge(int ve , int ti , int co)
    {
        to = ve ;
        time = ti ;
        cost = co ;
    }
};

vector< vector<edge> >adj(MAXN) ;
long long dp[MAXN][MAXT] ;
long long ans[MAXN] ;
int vis[MAXN][MAXT] ;
int tellnow[MAXN] ;

int n , m ;

int readint()
{
	bool minus = false;
	int result = 0;
	char ch;
	ch = getchar();
	while (true) {
		if (ch == '-') break;
		if (ch >= '0' && ch <= '9') break;
		ch = getchar();
	}
	if (ch == '-') minus = true; else result = ch-'0';
	while (true) {
		ch = getchar();
		if (ch < '0' || ch > '9') break;
		result = result*10 + (ch - '0');
	}
	if (minus)
		return -result;
	else
		return result;
}

int main()
{
    n = readint() ;
    m = readint() ;
    int a , b , c , d ;
    int Max = 0 ;
    for(int i = 0 ; i < m ; ++i)
    {
        a = readint() ;
        b = readint() ;
        c = readint() ;
        d = readint() ;
        Max = max(Max , c) ;
        adj[a].push_back(edge(b , c , d)) ;
        adj[b].push_back(edge(a , c , d)) ;
    }
    long long cons = 1e17 ;
    for(int i = 1 ; i <= n ; ++i)
    {
        for(int j = 0 ; j < MAXT ; ++j)
            dp[i][j] = cons , vis[i][j] = cons;
    }
    //dijkstra
    priority_queue< pair<int , pair<int , int> > , vector< pair<int , pair<int , int>  > > , greater< pair<int , pair<int , int> > > >q ;
    q.push({0 , {0 , 1}}) ;
    dp[1][0] = 0 ;
    bool flag = 0 ;
    while(!q.empty())
    {
        pair<int , pair<int , int> >p = q.top() ;
        q.pop() ;
        int node = p.second.second , sumc = p.first , sumt = p.second.first ;
        if(dp[node][sumt] < sumc)
            continue ;
        for(auto &child : adj[node])
        {
            int nto = child.to ;
            int ntime = child.time + sumt;
            int ncost = child.cost + sumc;
            if(ntime >= MAXT)
                continue ;
            if(dp[nto][ntime] > ncost)
            {
                dp[nto][ntime] = ncost ;
                q.push({ncost , {ntime , nto}}) ;
            }
        }
    }
    for(int i = 2 ; i <= n ; ++i)
    {
        ans[i] = cons ;
        for(int j = 1 ; j < MAXT ; ++j)
        {
            if(dp[i][j] == cons)
                continue ;
            ans[i] = min(ans[i] , (j * 1ll) * (dp[i][j] * 1ll)) ;
        }
    }
    for(int i = 2 ; i <= n ; ++i)
    {
        if(ans[i] == cons)
            ans[i] = -1 ;
        printf("%lld\n" , ans[i]);
    }
    return 0 ;
}

Compilation message (stderr)

ceste.cpp: In function 'int main()':
ceste.cpp:75:10: warning: unused variable 'flag' [-Wunused-variable]
     bool flag = 0 ;
          ^~~~

• Subtask 1: 16 / 16
• Subtask 2: 16 / 16
• Subtask 3: 16 / 16
• Subtask 4: 16 / 16
• Subtask 5: 0 / 16
• Subtask 6: 0 / 16
• Subtask 7: 0 / 16
• Subtask 8: 0 / 16
• Subtask 9: 0 / 16
• Subtask 10: 0 / 16