제출 #782468

#제출 시각아이디문제언어결과실행 시간메모리
782468Lyrically선물상자 (IOI15_boxes)C++17
0 / 100
1 ms212 KiB
#include<bits/stdc++.h> using namespace std; #define pii pair<int,int> #define pb push_back #define rep(i,n) for(int i=0;i<n;i++) #define rep1(i,n) for(int i=1;i<=n;i++) int read(){int x;scanf("%d",&x);return x;} void print(int x){printf("%d\n",x);} const int mod=1000000007; long long pre[10000005],suf[10000005]; long long delivery(int n,int k,int l,int p[]) { long long res=(1LL<<60); rep(i,n) { if(p[i]<=l-p[i]) { if(i<k){pre[i]=min(2*p[i],l);} else{pre[i]=pre[i-k]+min(2*p[i],l);} } } for(int i=n-1;i>=0;i--) { if(p[i]>l-p[i]) { if(i+k-1<n) { suf[i]=suf[i+k]+min(2*(l-p[i]),l); } else { suf[i]=min(2*(l-p[i]),l); } } } rep(i,n) { if(p[i]<=l-p[i]) { if(i+k-1<n&&p[i+k-1]>l-p[i+k-1]) { res=min(res,l+(i?pre[i-1]:0)+(i+k-1<n-1?suf[i+k]:0)); } } } return res; }

컴파일 시 표준 에러 (stderr) 메시지

boxes.cpp: In function 'int read()':
boxes.cpp:7:23: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
    7 | int read(){int x;scanf("%d",&x);return x;}
      |                  ~~~~~^~~~~~~~~
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