Submission #789175

#	Time	Username	Problem	Language	Result	Execution time	Memory
789175		enerelt14	The Big Prize (IOI17_prize)	C++14	Compilation error	0 ms	0 KiB

prize

#include <algorithm>
#include <array>
#include <bitset>
#include <cassert>
#include <chrono>
#include <climits>
#include <cmath>
#include <complex>
#include <cstring>
#include <functional>
#include <iomanip>
#include <iostream>
#include <map>
#include <numeric>
#include <queue>
#include <random>
#include <set>
#include <vector>
using namespace std;

const int B = 472;
int val;

vector<int> find(int l, int r){
	if (l > r)return {};
	vector<int> x = ask(r);
	if (x[0] + x[1] != val)return find(l, r - 1) + {r};
	int tl = l, tr = r;
	while (tl != tr){
		int mid = (tl + tr) / 2;
		vector<int> y = ask(mid);
		if (y[0] + y[1] != val){
			tl = mid + 1;
			continue;
		}
		if (y[1] != x[1])tl = mid + 1;
		else tr = mid;
	}
	if (l == tr)return {};
	else return find(l, tr - 2) + {tr - 1};
}

int find_best(int n){
	vector<int> non_lolipop, x;
	for (int i = 0; i < B; i++){
		x = ask(i);
		val = max(val, x[0] + x[1]);
	}
	for (int i = 0; i < n; i += B){
		non_lolipop += find(i, min(n - 1, i + B - 1));
	}
	for (int i = 0; i < non_lolipop.size(); i++){
		x = ask(non_lolipop[i]);
		if (x[0] + x[1] == 0)return non_lolipop[i];
	}
}

Compilation message (stderr)

prize.cpp: In function 'std::vector<int> find(int, int)':
prize.cpp:26:18: error: 'ask' was not declared in this scope
   26 |  vector<int> x = ask(r);
      |                  ^~~
prize.cpp:27:49: error: expected primary-expression before '{' token
   27 |  if (x[0] + x[1] != val)return find(l, r - 1) + {r};
      |                                                 ^
prize.cpp:27:48: error: expected ';' before '{' token
   27 |  if (x[0] + x[1] != val)return find(l, r - 1) + {r};
      |                                                ^~
      |                                                ;
prize.cpp:27:2: warning: this 'if' clause does not guard... [-Wmisleading-indentation]
   27 |  if (x[0] + x[1] != val)return find(l, r - 1) + {r};
      |  ^~
prize.cpp:27:49: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'if'
   27 |  if (x[0] + x[1] != val)return find(l, r - 1) + {r};
      |                                                 ^
prize.cpp:27:51: error: expected ';' before '}' token
   27 |  if (x[0] + x[1] != val)return find(l, r - 1) + {r};
      |                                                   ^
      |                                                   ;
prize.cpp:27:50: warning: statement has no effect [-Wunused-value]
   27 |  if (x[0] + x[1] != val)return find(l, r - 1) + {r};
      |                                                  ^
prize.cpp:40:32: error: expected primary-expression before '{' token
   40 |  else return find(l, tr - 2) + {tr - 1};
      |                                ^
prize.cpp:40:31: error: expected ';' before '{' token
   40 |  else return find(l, tr - 2) + {tr - 1};
      |                               ^~
      |                               ;
prize.cpp:40:2: warning: this 'else' clause does not guard... [-Wmisleading-indentation]
   40 |  else return find(l, tr - 2) + {tr - 1};
      |  ^~~~
prize.cpp:40:32: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'else'
   40 |  else return find(l, tr - 2) + {tr - 1};
      |                                ^
prize.cpp:40:39: error: expected ';' before '}' token
   40 |  else return find(l, tr - 2) + {tr - 1};
      |                                       ^
      |                                       ;
prize.cpp:40:36: warning: statement has no effect [-Wunused-value]
   40 |  else return find(l, tr - 2) + {tr - 1};
      |                                 ~~~^~~
prize.cpp: In function 'int find_best(int)':
prize.cpp:46:7: error: 'ask' was not declared in this scope
   46 |   x = ask(i);
      |       ^~~
prize.cpp:50:15: error: no match for 'operator+=' (operand types are 'std::vector<int>' and 'std::vector<int>')
   50 |   non_lolipop += find(i, min(n - 1, i + B - 1));
      |   ~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
prize.cpp:52:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   52 |  for (int i = 0; i < non_lolipop.size(); i++){
      |                  ~~^~~~~~~~~~~~~~~~~~~~
prize.cpp:53:7: error: 'ask' was not declared in this scope
   53 |   x = ask(non_lolipop[i]);
      |       ^~~
prize.cpp:44:14: warning: control reaches end of non-void function [-Wreturn-type]
   44 |  vector<int> non_lolipop, x;
      |              ^~~~~~~~~~~