Submission #442123

#	Time	Username	Problem	Language	Result	Execution time	Memory
442123		cheetose	Worst Reporter 4 (JOI21_worst_reporter4)	C++17	14 / 100	1025 ms	419928 KiB

worst_reporter2

#include <bits/stdc++.h>
#define mp make_pair
#define pb push_back
#define X first
#define Y second
#define y0 y12
#define y1 y22
#define INF 987654321987654321
#define PI 3.141592653589793238462643383279502884
#define fup(i,a,b,c) for(int (i)=(a);(i)<=(b);(i)+=(c))
#define fdn(i,a,b,c) for(int (i)=(a);(i)>=(b);(i)-=(c))
#define MEM0(a) memset((a),0,sizeof(a))
#define MEM_1(a) memset((a),-1,sizeof(a))
#define ALL(a) a.begin(),a.end()
#define COMPRESS(a) sort(ALL(a));a.resize(unique(ALL(a))-a.begin())
#define SYNC ios_base::sync_with_stdio(false);cin.tie(0)
using namespace std;
typedef long long ll;
typedef long double ld;
typedef double db;
typedef unsigned int uint;
typedef unsigned long long ull;
typedef pair<int, int> Pi;
typedef pair<ll, ll> Pll;
typedef pair<ld, ld> Pd;
typedef vector<int> Vi;
typedef vector<ll> Vll;
typedef vector<ld> Vd;
typedef vector<Pi> VPi;
typedef vector<Pll> VPll;
typedef vector<Pd> VPd;
typedef tuple<int, int, int> iii;
typedef tuple<int, int, int, int> iiii;
typedef tuple<ll, ll, ll> LLL;
typedef vector<iii> Viii;
typedef vector<LLL> VLLL;
typedef complex<double> base;
const int MOD = 1000000007;
ll POW(ll a, ll b, ll MMM = MOD) { ll ret = 1; for (; b; b >>= 1, a = (a*a) % MMM)if (b & 1)ret = (ret*a) % MMM; return ret; }
int dx[] = { 0,1,0,-1,1,1,-1,-1 }, dy[] = { 1,0,-1,0,1,-1,1,-1 };
int ddx[] = { -1,-2,1,-2,2,-1,2,1 }, ddy[] = { -2,-1,-2,1,-1,2,1,2 };

Vi v[200001];
int h[200001];
ll c[200001];
ll d[5001][5001];
ll go(int N,int P){
	if(v[N].empty()){
		if(h[N]>=P)return c[N];
		return 0;
	}
	ll &ret=d[N][P];
	if(~ret)return ret;
	ret=0;
	ll tmp=0;
	if(h[N]<P){
		for(int next:v[N]){
			tmp+=go(next,P);
		}
		return ret=tmp;
	}
	for(int next:v[N]){
		tmp+=go(next,P);
	}
	ret=max(ret,tmp);
	tmp=0;
	for(int next:v[N]){
		tmp+=go(next,h[N]);
	}
	ret=max(ret,tmp+c[N]);
	return ret;
}
int main(){
	MEM_1(d);
	int n;
	scanf("%d",&n);
	Vi vv={0};
	ll tot=0;
	fup(i,1,n,1){
		int x;
		scanf("%d%d%lld",&x,&h[i],&c[i]);
		tot+=c[i];
		if(i!=x)v[x].pb(i);
		vv.pb(h[i]);
	}
	COMPRESS(vv);
	fup(i,1,n,1)h[i]=lower_bound(ALL(vv),h[i])-vv.begin();
	printf("%lld\n",tot-go(1,1));
}

Compilation message (stderr)

worst_reporter2.cpp: In function 'int main()':
worst_reporter2.cpp:10:30: warning: unnecessary parentheses in declaration of 'i' [-Wparentheses]
   10 | #define fup(i,a,b,c) for(int (i)=(a);(i)<=(b);(i)+=(c))
      |                              ^
worst_reporter2.cpp:79:2: note: in expansion of macro 'fup'
   79 |  fup(i,1,n,1){
      |  ^~~
worst_reporter2.cpp:10:30: warning: unnecessary parentheses in declaration of 'i' [-Wparentheses]
   10 | #define fup(i,a,b,c) for(int (i)=(a);(i)<=(b);(i)+=(c))
      |                              ^
worst_reporter2.cpp:87:2: note: in expansion of macro 'fup'
   87 |  fup(i,1,n,1)h[i]=lower_bound(ALL(vv),h[i])-vv.begin();
      |  ^~~
worst_reporter2.cpp:76:7: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   76 |  scanf("%d",&n);
      |  ~~~~~^~~~~~~~~
worst_reporter2.cpp:81:8: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   81 |   scanf("%d%d%lld",&x,&h[i],&c[i]);
      |   ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~

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