Submission #74177

#	Time	Username	Problem	Language	Result	Execution time	Memory
74177		nvmdava	Ancient Books (IOI17_books)	C++17	Compilation error	0 ms	0 KiB

books

#include "books.h"
int k = 0;
int id[500001], l[500001], r[500001];
long long val[500001];
bool in[1000001];
int x;
void go(int v, long long c){
	if(in[v] == 1){
		val[k] = c;
		k++;
		return;
	}
	if(v <= x){
		l[k] = max(v, l[k]);
	}
	if(v >= x){
		r[k] = min(v, r[k]);
	}
	in[v] = 1;
	go(p[v], c + (long long)abs(v - p[v]));
}

long long minimum_walk(std::vector<int> p, int s) {
	x = s;
	memset(r, -1, sizeof r);
	memset(l, 0x3f, sizeof l);
	for(int i = 0; i < p.size(); i++){
		if(in[i] || p[i] == i) continue;
		go(i, 0LL);
	}
	long long ans = 0;
	int loc = -1;
	for(int i = 0; i < k; i++){
		ans += val[i];
		loc = max(loc, r[i]);
	}
	ans += (long long) loc;
	return ans;
}

Compilation message (stderr)

books.cpp: In function 'void go(int, long long int)':
books.cpp:14:10: error: 'max' was not declared in this scope
   l[k] = max(v, l[k]);
          ^~~
books.cpp:14:10: note: suggested alternative:
In file included from /usr/include/c++/7/vector:60:0,
                 from books.h:1,
                 from books.cpp:1:
/usr/include/c++/7/bits/stl_algobase.h:265:5: note:   'std::max'
     max(const _Tp& __a, const _Tp& __b, _Compare __comp)
     ^~~
books.cpp:17:10: error: 'min' was not declared in this scope
   r[k] = min(v, r[k]);
          ^~~
books.cpp:17:10: note: suggested alternative:
In file included from /usr/include/c++/7/vector:60:0,
                 from books.h:1,
                 from books.cpp:1:
/usr/include/c++/7/bits/stl_algobase.h:243:5: note:   'std::min'
     min(const _Tp& __a, const _Tp& __b, _Compare __comp)
     ^~~
books.cpp:20:5: error: 'p' was not declared in this scope
  go(p[v], c + (long long)abs(v - p[v]));
     ^
books.cpp:20:26: error: 'abs' was not declared in this scope
  go(p[v], c + (long long)abs(v - p[v]));
                          ^~~
books.cpp: In function 'long long int minimum_walk(std::vector<int>, int)':
books.cpp:25:2: error: 'memset' was not declared in this scope
  memset(r, -1, sizeof r);
  ^~~~~~
books.cpp:27:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i = 0; i < p.size(); i++){
                 ~~^~~~~~~~~~
books.cpp:35:9: error: 'max' was not declared in this scope
   loc = max(loc, r[i]);
         ^~~
books.cpp:35:9: note: suggested alternative:
In file included from /usr/include/c++/7/vector:60:0,
                 from books.h:1,
                 from books.cpp:1:
/usr/include/c++/7/bits/stl_algobase.h:265:5: note:   'std::max'
     max(const _Tp& __a, const _Tp& __b, _Compare __comp)
     ^~~