Submission #883295

#	Time	Username	Problem	Language	Result	Execution time	Memory
883295		Requiem	timeismoney (balkan11_timeismoney)	C++17	5 / 100	4 ms	1028 KiB

timeismoney

#include<bits/stdc++.h>
#define int long long
#define pb push_back
#define fast ios_base::sync_with_stdio(false), cin.tie(nullptr), cout.tie(nullptr);
#define MOD 1000000007
#define INF 1e18
#define fi first
#define se second
#define endl "\n"
#define FOR(i,a,b) for(int i=a;i<=b;i++)
#define FORD(i,a,b) for(int i=a;i>=b;i--)
#define sz(a) ((int)(a).size())
#define pi 3.14159265359
#define TASKNAME ""
template<typename T> bool maximize(T &res, const T &val) { if (res < val){ res = val; return true; }; return false; } 
template<typename T> bool minimize(T &res, const T &val) { if (res > val){ res = val; return true; }; return false; } 
using namespace std; 
typedef pair<int,int> ii; 
typedef pair<int,ii> iii; 
typedef vector<int> vi; 
const int MAXN = 2e2 + 9;
struct edge{
    int u,v,x,y;
    edge(int _u = 0,int _v = 0,int _x = 0,int _y = 0): u(_u), v(_v), x(_x), y(_y) {}
};
edge e[10004];
vector<ii> ValidEdge;
int n,m,par[MAXN],ranking[MAXN];
int sumtime = 0, sumcost = 0, numcmp;

int root(int u){
    if (par[u] == u) return u;
    else return par[u] = root(par[u]);
}
bool unite(int u,int v){
    u = root(u);
    v = root(v);
    if (u != v){
        if (ranking[u] <= ranking[v]) swap(u,v);
        ranking[u] += ranking[v];
        par[v] = u;
        numcmp--;
        return true;
    }
    return false;
}
main() 
{ 
    fast; 
   if (fopen(TASKNAME".inp","r")){
        freopen(TASKNAME".inp","r",stdin); 
        freopen(TASKNAME".out","w",stdout); 
   } 
   cin>>n>>m;
   iota(par+1,par+1+n,1);
   fill(ranking+1,ranking+1+n,1);
   numcmp = n;
   for(int i=1;i<=m;i++){
       cin>>e[i].u>>e[i].v>>e[i].x>>e[i].y;
       if (unite(e[i].u,e[i].v)){
           sumtime += e[i].x;
           sumcost += e[i].y;
           ValidEdge.pb({e[i].u,e[i].v});
       }
   }
   if (numcmp == 1){
       cout<<sumtime<<' '<<sumcost<<endl;
       for(int i=0;i<ValidEdge.size();i++){
           cout<<ValidEdge[i].fi<<' '<<ValidEdge[i].se<<endl;
       }
   }
   else{
       cout<<-1<<endl;
   }


} 

Compilation message (stderr)

timeismoney.cpp:47:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   47 | main()
      | ^~~~
timeismoney.cpp: In function 'int main()':
timeismoney.cpp:68:21: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   68 |        for(int i=0;i<ValidEdge.size();i++){
      |                    ~^~~~~~~~~~~~~~~~~
timeismoney.cpp:51:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   51 |         freopen(TASKNAME".inp","r",stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~
timeismoney.cpp:52:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   52 |         freopen(TASKNAME".out","w",stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 5 / 100