제출 #1064426

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1064426		anango	친구 (IOI14_friend)	C++17	컴파일 에러	0 ms	0 KiB

friend

#include "friend.h"
#include <bits/stdc++.h>
#define int long long

int INF = 1LL<<60;
// Find out best sample
signed findSample(signed n,signed confidence[],signed host[],signed protocol[]){
	int ans=10;
    //let 0 denote i, 1 denote the friends of i
    //let dp0[i] = answer if we are allowed 0 or 1
    //dp1[i] = answer if we're only allowed 0
    //dp2[i] = answer if we're only allowed 1
    //dp3[i] = answer if we're allowed neither
    //in the subtree of i
    int ma = -INF;
    for (int i=0; i<n; i++) {
        ma=max(ma,confidence[i]);
    }
	return ma;
}

컴파일 시 표준 에러 (stderr) 메시지

friend.cpp: In function 'int findSample(int, int*, int*, int*)':
friend.cpp:17:12: error: 'max' was not declared in this scope; did you mean 'std::max'?
   17 |         ma=max(ma,confidence[i]);
      |            ^~~
      |            std::max
In file included from /usr/include/c++/10/algorithm:62,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:65,
                 from friend.cpp:2:
/usr/include/c++/10/bits/stl_algo.h:3486:5: note: 'std::max' declared here
 3486 |     max(initializer_list<_Tp> __l, _Compare __comp)
      |     ^~~
friend.cpp:8:6: warning: unused variable 'ans' [-Wunused-variable]
    8 |  int ans=10;
      |      ^~~