제출 #578772

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
578772		AlperenT	Homecoming (BOI18_homecoming)	C++17	컴파일 에러	0 ms	0 KiB

homecoming

#include <bits/stdc++.h>
#include "homecoming.h"

using namespace std;

const long long INF = 1e18;

long long solve(int n, int k, int *a, int *b){
	long long ans = 0;

	long long mx, cur, cost;

	for(int it = 1; it <= 2; it++){
		mx = (it == 1 ? -INF : 0);

		cost = accumulate(b, b + k, 0ll);

		cur = a[0] - cost;

		mx = max(mx, cur);

		for(int i = 1; i < n; i++){
			cost -= b[i - 1];

			if(i + k - 1 < n) nxtcost = b[i + k - 1];
			else if(it == 2) nxtcost = b[i + k - 1 - n];
			else nxtcost = 0;

			cur = max(a[i] + cur - nxtcost, a[i] - (cost + nxtcost) + mx);

			cost += nxtcost;

			mx = max(mx, cur);
		}

		ans = max(ans, mx);
	}

	return ans;
}

컴파일 시 표준 에러 (stderr) 메시지

homecoming.cpp: In function 'long long int solve(int, int, int*, int*)':
homecoming.cpp:25:22: error: 'nxtcost' was not declared in this scope; did you mean 'cost'?
   25 |    if(i + k - 1 < n) nxtcost = b[i + k - 1];
      |                      ^~~~~~~
      |                      cost
homecoming.cpp:26:21: error: 'nxtcost' was not declared in this scope; did you mean 'cost'?
   26 |    else if(it == 2) nxtcost = b[i + k - 1 - n];
      |                     ^~~~~~~
      |                     cost
homecoming.cpp:27:9: error: 'nxtcost' was not declared in this scope; did you mean 'cost'?
   27 |    else nxtcost = 0;
      |         ^~~~~~~
      |         cost
homecoming.cpp:29:27: error: 'nxtcost' was not declared in this scope; did you mean 'cost'?
   29 |    cur = max(a[i] + cur - nxtcost, a[i] - (cost + nxtcost) + mx);
      |                           ^~~~~~~
      |                           cost