Submission #30449

#	Time	Username	Problem	Language	Result	Execution time	Memory
30449		ozaslan	Game (IOI14_game)	C++14	Compilation error	0 ms	0 KiB

game

#include "game.h"
using namespace std;

int p[1500], rank[1500], s[1500];
int dp[1500][1500], N;


void linkSet(int x, int y) {
	if (rank[x] > rank[y]) {
		p[y] = x;
		s[x] += s[y];

		for(int i = 0; i < N; i++)
			dp[x][i] += dp[y][i];
	}

	else {
		p[x] = y;
		rank[y]++;
		s[y] += s[x];

		for(int i = 0; i < N; i++)
			dp[y][i] += dp[x][i];
	}
}
int findSet(int x) {
	if(x != p[x])
		p[x] = findSet(p[x]);
	return p[x];
}
void makeSet(int x) {p[x] = x, rank[x] = 0, s[x] = 1; }
void unionSet(int x, int y) { linkSet(findSet(x), findSet(y)); }


void initialize(int n) {
	N = n;
	for(int i = 0; i < N; i++)
		makeSet(i);
}


int hasEdge(int u, int v) {
	int x = findSet(u);
	int y = findSet(v);
	if(x < y) swap(x, y);

	if(x == y) return 0;

	if(dp[x][y] == s[x]*s[y]-1) {
		unionSet(x, y);
		return 1;
	}

	dp[x][y]++;
	dp[y][x]++;
    return 0;
}

Compilation message (stderr)

game.cpp: In function 'int hasEdge(int, int)':
game.cpp:45:21: error: 'swap' was not declared in this scope
  if(x < y) swap(x, y);
                     ^