제출 #167954

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
167954		juggernaut	금 캐기 (IZhO14_divide)	C++14	100 / 100	57 ms	6776 KiB

divide

#include<bits/stdc++.h>
#define int long long int
using namespace std;
struct data{
    int x,g,d;
};
data a[100001];
int n,i,l,r,gold[100001],drive[100001],mx[100002],m,ans;
main(){
    scanf("%lld",&n);
    for(i=1;i<=n;i++)scanf("%lld%lld%lld",&a[i].x,&a[i].g,&a[i].d),gold[i]=gold[i-1]+a[i].g,drive[i]=drive[i-1]+a[i].d,mx[i]=drive[i]-a[i].x;
    for(i=n-1;i>0;i--)mx[i]=max(mx[i+1],mx[i]);
    for(i=1;i<=n;i++){
        l=i,r=n;
        while(l<r){
            m=(l+r+1)>>1;
            if(mx[m]>=drive[i-1]-a[i].x)l=m;
            else r=m-1;
        }
        ans=max(ans,gold[l]-gold[i-1]);
    }
    printf("%lld",ans);
}

컴파일 시 표준 에러 (stderr) 메시지

divide.cpp:9:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
 main(){
      ^
divide.cpp: In function 'int main()':
divide.cpp:10:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%lld",&n);
     ~~~~~^~~~~~~~~~~
divide.cpp:11:119: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     for(i=1;i<=n;i++)scanf("%lld%lld%lld",&a[i].x,&a[i].g,&a[i].d),gold[i]=gold[i-1]+a[i].g,drive[i]=drive[i-1]+a[i].d,mx[i]=drive[i]-a[i].x;
                      ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 17 / 17
• Subtask 2: 31 / 31
• Subtask 3: 52 / 52