제출 #476942

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
476942		keta_tsimakuridze	Worst Reporter 4 (JOI21_worst_reporter4)	C++14	79 / 100	563 ms	66908 KiB

worst_reporter2

#include<bits/stdc++.h>
#define f first
#define s second
#define int long long
#define pii pair<int,int>
using namespace std;
const int N = 2e5 + 5, mod = 1e9 + 7; // !
int t,a[N],c[N],n;
multiset<pii> s[N];
vector <int> V[N]; 
void dfs(int u) {
	for(int i = 0; i < V[u].size(); i++) {
		dfs(V[u][i]);
		int x = V[u][i];
		if(s[u].size() < s[x].size()) swap(s[u],s[x]);
		while(s[x].size()) {
			pii y = *s[x].begin();
			s[x].erase(s[x].find(y));
			s[u].insert(y);
		}
	}
	//
	int saved = c[u];
	while(s[u].upper_bound({a[u],-1}) != s[u].begin()){
		pii x = *--s[u].upper_bound({a[u] ,-1});
		s[u].erase(s[u].find(x));
		if(x.s <= c[u]) {
			c[u] -= x.s;
		}
		else {
			s[u].insert({x.f,x.s - c[u]});
			break;
		}
	}
	s[u].insert({a[u], saved});
}
main(){
	cin >> n;
	int sum = 0;
	for(int i = 1; i <= n; i++) {
		int p;
		cin >> p >> a[i] >> c[i];
		sum += c[i];
		if(i == 1) {
			if(p != 1) return 0;
			continue;
		}
		if(p >= i) return 0;
		V[p].push_back(i);
		
	}
	dfs(1);
	int ans = 0; 
	for(multiset <pii> :: iterator it = s[1].begin(); it != s[1].end(); it++) {
		ans += (*it).s;	
	}
	cout << sum - ans;
 }

컴파일 시 표준 에러 (stderr) 메시지

worst_reporter2.cpp: In function 'void dfs(long long int)':
worst_reporter2.cpp:12:19: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   12 |  for(int i = 0; i < V[u].size(); i++) {
      |                 ~~^~~~~~~~~~~~~
worst_reporter2.cpp: At global scope:
worst_reporter2.cpp:37:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   37 | main(){
      | ^~~~

• Subtask 1: 14 / 14
• Subtask 2: 65 / 65
• Subtask 3: 0 / 21