Submission #480720

#	Time	Username	Problem	Language	Result	Execution time	Memory
480720		MonkeyKing	Semiexpress (JOI17_semiexpress)	C++14	100 / 100	35 ms	336 KiB

semiexpress

#include <numeric>
#include <iostream>
#include <algorithm>
#include <cmath>
#include <stdio.h>
#include <stdlib.h>
#include <vector>
#include <map>
#include <queue>
#include <set>
#include <string>
#include <string.h>
#include <stack>
#include <assert.h>
#include <bitset>
#include <time.h>
#define Endl endl
#define mp make_pair
#define mt make_tuple
#define ll long long 
#define ull unsigned long long
#define pii pair<int,int>
#define over(A) {cout<<A<<endl;exit(0);}
#define all(A) A.begin(),A.end()
#define quickcin ios_base::sync_with_stdio(false);
const int mod=1000000007;
const int gmod=3;
const int inf=1039074182;
const double eps=1e-9;
const double pi=3.141592653589793238462643383279;
const ll llinf=2LL*inf*inf;
template <typename T1,typename T2> inline void chmin(T1 &x,T2 b) {if(b<x) x=b;}
template <typename T1,typename T2> inline void chmax(T1 &x,T2 b) {if(b>x) x=b;}
inline void chadd(int &x,int b) {x+=b-mod;x+=(x>>31 & mod);}
template <typename T1,typename T2> inline void chadd(T1 &x,T2 b) {x+=b;if(x>=mod) x-=mod;}
template <typename T1,typename T2> inline void chmul(T1 &x,T2 b) {x=1LL*x*b%mod;}
template <typename T1,typename T2> inline void chmod(T1 &x,T2 b) {x%=b,x+=b;if(x>=b) x-=b;}
template <typename T> inline T mabs(T x) {return (x<0?-x:x);}
using namespace std;
int n,m,k;
ll a,b,c;
ll T;
int dp[3005][3005];
int s[3005];
int rm[3005];
ll t[3005];

inline int calc(int rm,ll t)
{
	if(t>T) return 0;
	return max(0LL,min((ll)rm,(T-t)/a+1));
}

inline int calc2(int rm,ll t)
{
	int steps=calc(rm,t);
	return calc(rm-steps,t+steps*c);
}

int main()
{
	// freopen("input.txt","r",stdin);
	// freopen("car.in","r",stdin);
	// freopen("car.out","w",stdout);
	cin>>n>>m>>k>>a>>b>>c>>T;
	for(int i=0;i<m;i++) scanf("%d",s+i),s[i]--;
	k-=m;
	m--;
	for(int i=0;i<m;i++) rm[i]=s[i+1]-s[i];
	for(int i=0;i<m;i++) t[i]=s[i]*b;
	while(k--)
	{
		int ch=0;
		for(int i=1;i<m;i++)
		{
			if(calc2(rm[ch],t[ch])<calc2(rm[i],t[i])) ch=i;
		}
		// if(ch==1) cout<<rm[1]<<','<<t[1]<<endl;
		int steps=calc(rm[ch],t[ch]);
		rm[ch]-=steps;
		t[ch]+=steps*c;
	}
	ll ans=n;
	for(int i=0;i<m;i++) ans-=rm[i]-calc(rm[i],t[i]);
	ans--;
	ans-=(b*(n-1)>T);
	cout<<ans<<endl;
	return 0;
}

Compilation message (stderr)

semiexpress.cpp: In function 'int main()':
semiexpress.cpp:66:28: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   66 |  for(int i=0;i<m;i++) scanf("%d",s+i),s[i]--;
      |                       ~~~~~^~~~~~~~~~

• Subtask 1: 18 / 18
• Subtask 2: 30 / 30
• Subtask 3: 52 / 52