제출 #200522

#	제출 시각UTC-0	아이디	문제	언어	결과	실행 시간	메모리
200522	2020-02-07 04:54:54	arnold518	스트랩 (JOI14_straps)	C++14	100 / 100	173 ms	63780 KiB

straps

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#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;
const int MAXN = 2000;
const ll INF = 1e18;
int N, A[MAXN+10], B[MAXN+10];
ll dp[MAXN+10][MAXN*2+10];
ll solve(int pos, int val)
{
  if(pos==N+1)
  {
    if(val>=-1) return 0;
    else return -INF; 
  }
  ll &ret=dp[pos][val+MAXN];
  if(ret!=-1) return ret;
  ret=-INF;
  ret=max(ret, solve(pos+1, val));
  ret=max(ret, solve(pos+1, min(N, val+A[pos]))+B[pos]);
  return ret;
}
 
 
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컴파일 시 표준 에러 (stderr) 메시지

straps.cpp: In function 'int main()':
straps.cpp:33:9: warning: unused variable 'j' [-Wunused-variable]
  int i, j;
         ^
straps.cpp:34:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d", &N);
  ~~~~~^~~~~~~~~~
straps.cpp:35:49: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  for(i=1; i<=N; i++) scanf("%d%d", &A[i], &B[i]), A[i]--;
                      ~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~

• Subtask 1: 5 / 5
• Subtask 2: 5 / 5
• Subtask 3: 45 / 45
• Subtask 4: 45 / 45