Säähavainnot

input/code.cpp: In function 'void ennusta(int)':
input/code.cpp:56:28: warning: unused variable 'deltat' [-Wunused-variable]
   56 |         double ts=T[i][23],deltat=0;
      |                            ^~~~~~

#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define N 10123
#define NN 2000
#define EI (-1e5)
 
int n;
double T[N][24],dt[N][24],E[N][12],S[12],avg[12];
map<pair<double,double>,double> virtaus[N];
 
double mittaus[8000][24],oikea[8000][24];
 
void genvirtaus(){
	for(int i=0;i<n;++i){
		for(int h=0;h<23;++h){
			virtaus[h].insert({{T[i][h],T[i][h]-T[i][h-1]},T[i][h+1]-T[i][h]});
		}
	}
}
 
double kk(double pt,double dt,int h){
	double distance=1e5,mr=0;
	for(auto P:virtaus[h]){
		auto p=P.first;
		double dd=p.first*p.first+p.second*p.second;
		if(dd<distance){
			distance=dd;
			mr=P.second;
		}
	}
	return mr;
}
 
void luedata(){
	ifstream in;
	in.open("sample_data.txt");
 
	int Nn;
	in>>Nn;
	for(int i=0;i<8000;++i){
		for(int h=0;h<24;++h) in>>mittaus[i][h];
		for(int h=0;h<12;++h) in>>oikea[i][h];
	}
 
	in.close();
}
 
void ennusta(int i){
	for(int h=0;h<12;++h){
		dt[i][h]=T[i][h+1]-T[i][h];
	}
	double avg=0;
	for(int h=0;h<24;++h) avg+=T[i][h];
	avg/=24;
	double ts=T[i][23],deltat=0;
	for(int h=0;h<12;++h){
		ts+=dt[i][h];
 
		//deltat=kk(ts,deltat,h);
		//ts+=deltat;
 
		//E[i][h]=ts;
		E[i][h]=(1.5*ts+0.5*T[i][h]+0.5*avg)/2.5;
		//E[i][h]=avg;
		S[h]+=E[i][h];
	}
}
 
void solve(){
	genvirtaus();
 
	for(int i=0;i<n;++i){
		ennusta(i);
	}
}
 
void prosentti(){
	luedata();
	n=1000;
	double p=0;
	ofstream out;
	out.open("weather_output");
	for(int i=0;i<n;++i){
		for(int h=0;h<24;++h){
			T[i][h]=mittaus[i][h];
		}
	}
	genvirtaus();
	for(int i=0;i<n;++i){
		ennusta(i);
		int a=0,b=0;
		for(int h=0;h<12;++h){
			double d=abs(E[i][h]-oikea[i][h]);
			if(d<0.75){
				++a;
			} else if(d>=2.05){
				++b;
			}
		}
		p+=max(0,a-b);
 
		for(int h=0;h<24;++h) out<<mittaus[i][h]<<' ';
		for(int h=0;h<12;++h) out<<oikea[i][h]<<' ';
		out<<'\n';
 
		for(int h=0;h<12;++h) out<<E[i][h]<<' ';
		out<<'\n';
	}
 
	out.close();
	cout<<p/(24*n)<<'\n';
}
 
void ratkaisu(){
	cin>>n;
	for(int i=0;i<n;++i){
		for(int h=0;h<24;++h) cin>>T[i][h];
	}
 
	solve();
 
	for(int i=0;i<n;++i){
		for(int h=0;h<6;++h){
			printf("%.1f ",E[i][h]);
		}
		for(int h=6;h<12;++h){
			printf("? ");
		}
	}
	puts("");
 
}
 
int main(){
	//srand(time(NULL));
	cin.tie(0)->sync_with_stdio(0);
	ratkaisu();
	//prosentti();
	//simulaatio();
}

Test 1

Verdict: ACCEPTED

Test 2

Verdict: ACCEPTED

Test 3

Verdict: ACCEPTED

Test 4

Verdict: ACCEPTED

Test 5

Verdict: ACCEPTED

Test 6

Verdict: ACCEPTED

Test 7

Verdict: ACCEPTED

Test 8

Verdict: ACCEPTED