Submission #1165725

#	Time	Username	Problem	Language	Result	Execution time	Memory
1165725		fabijan_cikac	Rail (IOI14_rail)	C++20	Compilation error	0 ms	0 KiB

rail

#include <bits/stdc++.h>
//#include "rail.h"

using namespace std;

#define pb push_back

struct S{
	int loc, id, t;
};

const int MAXN = 5010;

int N;
vector<S> b;
int dist[MAXN][MAXN];

int getDistance(int x, int y){
	cout << "? " << x << ' ' << y << endl;
	int z; cin >> z; return z;
}

int D(int x, int y){
	if (dist[x][y] != -1) return dist[x][y];
	if (x == y) return dist[x][y] = 0;
	dist[y][x] = getDistance(x, y);
	return dist[x][y] = dist[y][x];
}

bool cmp1(int x, int y){ return D(0, x) < D(0, y); }
bool cmp2(S x, S y){ return x.loc < y.loc; }

int location[MAXN]; int stype[MAXN];
void findLocation(int n, int first, int location[], int stype[]){
	//cout << "ok" << endl;
	memset(dist, -1, sizeof(dist)); N = n;
	
	vector<int> a;
	for (int i = 1; i < N; ++i) a.pb(i);
	
	sort(a.begin(), a.end(), cmp1);
	//cout << "b" << endl;
	S L = {first, 0, 0}, R = {first + D(0, a[0]), a[0], 1};
	
	b.pb(L), b.pb(R);
	for (int i = 1; i < (int)(a.size()); ++i){
		int x = a[i];
		//is he directly connected to L
		int lx = L.loc + D(x, L.id);
		
		cout << " ??? " << x << ' ' << lx << " :: " << L.loc << ' ' << L.id << ' ' << L.t << " -- " << R.loc << ' ' << R.id << ' ' << R.t << endl;
		
		int P = 1e9;
		for (auto p: b)
			if (p.loc < min(lx, R.loc) && !p.t) P = p.loc;
		bool good = 0;
		if ((lx - P) + (R.loc - P) == D(x, R.id)) good = 1;
		if (good){
			//cout << " !!! " << x << ' ' << lx << endl;
			S nw = {lx, x, 1}; b.pb(nw);
			if (nw.loc > R.loc) R = nw;
		}
		else{
			S nw = {R.loc - D(x, R.id), x, 0}; b.pb(nw);
			//cout << " !!! " << x << ' ' << nw.loc << endl;
			if (nw.loc < L.loc) L = nw;
		}
		
		sort(b.begin(), b.end(), cmp2);
	}
	
	for (auto p: b){
		cout << "F: " << p.id << ": " << p.loc << ' ' << p.t << endl;
		location[p.id] = p.loc, stype[p.id] = p.t + 1;
	}
	
	for (int i = 0; i < N; ++i)
		cout << location[i] << ' ';
	cout << endl;
	for (int i = 0; i < N; ++i)
		cout << stype[i] << ' ';
	cout << endl;
	
	return;
}

int main(){
	int niz[MAXN] = { 0 };
	findLocation(4, 1, niz, niz);
	return 0;
}

Compilation message (stderr)

/usr/bin/ld: /tmp/cclBxG9G.o: in function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'; /tmp/ccI6SvBB.o:rail.cpp:(.text.startup+0x0): first defined here
/usr/bin/ld: /tmp/cclBxG9G.o: in function `main':
grader.cpp:(.text.startup+0x2d9): undefined reference to `findLocation'
collect2: error: ld returned 1 exit status