제출 #217131

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
217131		juggernaut	코알라 (JOI13_koala)	C++14	20 / 100	865 ms	4756 KiB

koala

//Just try and the idea will come
#include<bits/stdc++.h>
#define fr first
#define sc second
using namespace std;
typedef long long int ll;
ll k,m,d,a,n,i,dp[100005],j,cnt;
pair<ll,ll>p[100005];
int main(){
    scanf("%lld%lld%lld%lld%lld",&k,&m,&d,&a,&n);
    for(i=2;i<n+2;i++)scanf("%lld%lld",&p[i].fr,&p[i].sc);
    p[1]={k,0};
    n+=2;
    p[n]={m,0};
    for(i=2;i<=n;i++){
        dp[i]=dp[j]-a*((p[i].fr-p[1].fr+d-1)/d)+p[i].sc;
        cnt=1000;
        for(j=i-1;j>0&&cnt--;j--,cnt)dp[i]=max(dp[i],dp[j]-a*((p[i].fr-p[j].fr+d-1)/d)+p[i].sc);
    }
    printf("%lld",dp[n]);
}

컴파일 시 표준 에러 (stderr) 메시지

koala.cpp: In function 'int main()':
koala.cpp:18:34: warning: right operand of comma operator has no effect [-Wunused-value]
         for(j=i-1;j>0&&cnt--;j--,cnt)dp[i]=max(dp[i],dp[j]-a*((p[i].fr-p[j].fr+d-1)/d)+p[i].sc);
                                  ^~~
koala.cpp:10:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%lld%lld%lld%lld%lld",&k,&m,&d,&a,&n);
     ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
koala.cpp:11:28: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     for(i=2;i<n+2;i++)scanf("%lld%lld",&p[i].fr,&p[i].sc);
                       ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 20 / 20
• Subtask 2: 0 / 30
• Subtask 3: 0 / 50