Submission #125925

#	Time	Username	Problem	Language	Result	Execution time	Memory
125925		Masterdan	The Big Prize (IOI17_prize)	C++14	Compilation error	0 ms	0 KiB

prize

#include "prize.h"
#include <bits/stdc++.h>
#define MIN -1
#define MAX 1000000000
#define all(a)  a.begin (), a.end ()
#define mp  make_pair
#define pb  push_back
using namespace std;
typedef vector <int> vi;
typedef long long int ll;
typedef pair <int, int> ii;
int binary (int a, int b){
    vector <int> v;
    v=ask((a+b)/2);
    if(v[0]==1){
        return binary(a, (a+b)/2);
    }else{
        if(v[1]==1)return binary((a+b)/2+1, b);
    }
    if(v[0]==0 and v[1]==0)return (a+b)/2;
}
int find_best(int n) {
        return binary(0, n-1);
}

using namespace std;

static const int max_q = 10000;
static int n;
static int query_count = 0;
static vector<int> g;
static vector<vector<int> > rank_count;

vector<int> ask(int i) {
	query_count++;
	if(query_count > max_q) {
		cerr << "Query limit exceeded" << endl;
		exit(0);
	}

	if(i < 0 || i >= n) {
		cerr << "Bad index: " << i << endl;
		exit(0);
	}

	vector<int> res(2);
	res[0] = rank_count[g[i] - 1][i + 1];
	res[1] = rank_count[g[i] - 1][n] - res[0];
	return res;
}

int main() {
	cin >> n;

	g.resize(n);
	for(int i = 0; i < n; i++) {
		cin >> g[i];
		if(g[i] < 1) {
			cerr << "Invalid rank " << g[i] << " at index " << i << endl;
			exit(0);
		}
	}

	int max_rank = *max_element(g.begin(), g.end());

	rank_count.resize(max_rank + 1, vector<int>(n + 1, 0));
	for(int r = 0; r <= max_rank; r++) {
		for(int i = 1; i <= n; i++) {
			rank_count[r][i] = rank_count[r][i - 1];
			if(g[i - 1] == r)
			  rank_count[r][i]++;
		}
	}

	for(int i = 0; i <= n; i++)
		for(int r = 1; r <= max_rank; r++)
			rank_count[r][i] += rank_count[r - 1][i];

	int res = find_best(n);
	cout << res << endl << "Query count: " << query_count << endl;

	return 0;
}

Compilation message (stderr)

prize.cpp: In function 'int binary(int, int)':
prize.cpp:21:1: warning: control reaches end of non-void function [-Wreturn-type]
 }
 ^
/tmp/ccKpCLnG.o: In function `ask(int)':
grader.cpp:(.text+0x0): multiple definition of `ask(int)'
/tmp/ccbsh7u1.o:prize.cpp:(.text+0x0): first defined here
/tmp/ccKpCLnG.o: In function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'
/tmp/ccbsh7u1.o:prize.cpp:(.text.startup+0x0): first defined here
collect2: error: ld returned 1 exit status