Submission #786434

#	Time	Username	Problem	Language	Result	Execution time	Memory
786434		minhcool	timeismoney (balkan11_timeismoney)	C++17	100 / 100	734 ms	796 KiB

timeismoney

#define local
#ifndef local
#include ""
#endif
#include<bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
using namespace __gnu_pbds;
using namespace std;
 
//#define int long long
#define fi first
#define se second
#define pb push_back
#define mp make_pair
 
typedef pair<int, int> ii;
typedef pair<ii, int> iii;
typedef pair<ii, ii> iiii;
 
const int N = 3e6 + 5;
 
const int oo = 1e9 + 7, mod = 1e9 + 7;
 
mt19937 rng(1);
 
int rnd(int l, int r){
	int temp = rng() % (r - l + 1);
	return abs(temp) + l;
}
 
int n, m;
vector<iiii> edges;
 
vector<iiii> edges2;
 
int rt[N], sz[N];
 
int root(int x){
	return (x == rt[x] ? x : rt[x] = root(rt[x]));
}
 
bool merge(int x, int y){
	x = root(x), y = root(y);
	if(x == y) return 0;
	sz[x] += sz[y];
	rt[y] = x;
	return 1;
}
 
bool cmp(iiii a, iiii b){
	return a.se.fi < b.se.fi;
}
 
pair<int, ii> answer = {oo, {0, 0}};
 
map<ii, ii> mpp;
 
void solve(ii a, ii b){
	if(a.fi == b.fi || a.se == b.se) return;
	//cout << a.fi << " " << a.se << " " << b.fi << " " << b.se << "\n";
	//exit(0);
	if(b.fi < a.fi) swap(a, b);
    if(a.se < b.se) return;
	int temp1 = b.fi - a.fi, temp2 = a.se - b.se, cnt = 0;
	//assert(temp1 >= 0 && temp2 >= 0);
	//cout << temp1 << " " << temp2 << "\n";
	for(auto it : edges){
		edges2[cnt] = {{it.fi.fi, it.fi.se}, {it.se.fi * temp2 + it.se.se * temp1, cnt}};
		cnt++;
	}
	sort(edges2.begin(), edges2.end(), cmp);
	int tol_a = 0, tol_b = 0;
	for(int i = 1; i <= n; i++){
		sz[i] = 1, rt[i] = i;
	}
	for(auto it : edges2){
		if(merge(it.fi.fi, it.fi.se)){
			//cout << it.fi.fi << " " << it.fi.se << "\n";
			tol_a += edges[it.se.se].se.fi;
			tol_b += edges[it.se.se].se.se;
		}
	}
	answer = min(answer, {tol_a * tol_b, {tol_a, tol_b}});
	if(mpp.find({tol_a, tol_b}) == mpp.end()) mpp[{tol_a, tol_b}] = {temp2, temp1};
	//cout << tol_a << " " << tol_b << " " << temp2 << " " << temp1 << "\n";
	if ((a.se - b.se) * (tol_a - a.fi) == (a.se - tol_b) * (b.fi - a.fi)) {
	//	answer = min(answer, {a.fi * a.se, a});
	//	answer = min(answer, {b.fi * b.se, b});
		return;
	}
	solve(a, {tol_a, tol_b});
	solve({tol_a, tol_b}, b);
}
 
bool cmp1(iiii a, iiii b){
	return a.se.fi < b.se.fi;
}
 
bool cmp2(iiii a, iiii b){
	return a.se.se < b.se.se;
}
 
#ifdef local
void process(){
	cin >> n >> m;
	for(int i = 1; i <= m; i++){
		int x, y, a, b;
		cin >> x >> y >> a >> b;
		x++, y++;
		edges.pb({{x, y}, {a, b}});
	}
	//exit(0);
	sort(edges.begin(), edges.end(), cmp1);
	//exit(0);
	for(int i = 1; i <= n; i++) sz[i] = 1, rt[i] = i;
	ii tol_1 = {0, 0};
	for(auto it : edges) if(merge(it.fi.fi, it.fi.se)) tol_1 = {tol_1.fi + it.se.fi, tol_1.se + it.se.se};
	sort(edges.begin(), edges.end(), cmp2);
	for(int i = 1; i <= n; i++) sz[i] = 1, rt[i] = i;
	ii tol_2 = {0, 0};
	for(auto it : edges) if(merge(it.fi.fi, it.fi.se)) tol_2 = {tol_2.fi + it.se.fi, tol_2.se + it.se.se};
    edges2.resize(edges.size());
	//exit(0);
	mpp[tol_1] = {1, 0};
	mpp[tol_2] = {0, 1};
	answer = min(answer, {tol_1.fi * tol_1.se, tol_1});
	answer = min(answer, {tol_2.fi * tol_2.se, tol_2});
	solve(tol_1, tol_2);
	cout << answer.se.fi << " " << answer.se.se << "\n";
 
	//cout << mpp[answer.se].fi << " " << mpp[answer.se].se << "\n";
//	edges2.clear();
	int cnt = 0;
	for(auto it : edges){
		edges2[cnt] = {{it.fi.fi, it.fi.se}, {it.se.fi * mpp[answer.se].fi + it.se.se * mpp[answer.se].se, cnt}};
		cnt++;
	}
	sort(edges2.begin(), edges2.end(), cmp);
	int tol_a = 0, tol_b = 0;
	for(int i = 1; i <= n; i++){
		sz[i] = 1, rt[i] = i;
	}
	for(auto it : edges2){
		if(merge(it.fi.fi, it.fi.se)){
			cout << it.fi.fi - 1 << " " << it.fi.se - 1 << "\n";
		}
	}
}
 
signed main(){
	ios_base::sync_with_stdio(0);
	cin.tie(0);
//	freopen("kek.inp", "r", stdin);
//	freopen("kek.out", "w", stdout);
	process();
}
#endif

Compilation message (stderr)

timeismoney.cpp: In function 'void process()':
timeismoney.cpp:139:6: warning: unused variable 'tol_a' [-Wunused-variable]
  139 |  int tol_a = 0, tol_b = 0;
      |      ^~~~~
timeismoney.cpp:139:17: warning: unused variable 'tol_b' [-Wunused-variable]
  139 |  int tol_a = 0, tol_b = 0;
      |                 ^~~~~

• Subtask 1: 100 / 100