UVa 12239 - Bingo (try all 90^2 pairs, see if all numbers in [0..N] are there)

Link:https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=244&page=show_problem&problem=3391
Sol:

#include <cstdio>
	#include <cmath>
	#include <set>
	using namespace std;
	int main() {
	int n, b, x[100];
	while (scanf("%d %d", &n, &b), n || b) {
	set<int> checker;
	for (int i = 0; i < b; i++) {
	scanf("%d", &x[i]);
	}
	for (int i = 0; i < b; i++) {
	for (int j = i; j < b; j++) {
	int d = abs(x[i] - x[j]);
	if (d <= n)
	checker.insert(d);
	}
	}
	if (checker.size() == n + 1)
	printf("Y\n");
	else
	printf("N\n");
	}
	return 0;
	}

UVa 11459 Snakes and Ladders * (simulate it, similar to UVa 647)

Link: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=26&page=show_problem&problem=2454
Sol:

#include <iostream>
	#include <vector>
	using namespace std;
	int main()
	{
	int T;
	cin >> T;
	for (int i = 0; i < T; ++i)
	{
	int a, b, c;
	cin >> a >> b >> c;
	vector<int> playerPositions(a, 1), changeFromSpot(101, 0);
	for (int z = 0; z < b; ++z)
	{
	int start, end;
	cin >> start >> end;
	changeFromSpot[start] = end - start;
	}
	bool won(false);
	int change;
	for (int z = 0; z < c; ++z)
	{
	cin >> change;
	if (!won)
	{
	playerPositions[z % a] += change;
	while (playerPositions[z % a] < 100 && changeFromSpot[playerPositions[z % a]] != 0)
	playerPositions[z % a] += changeFromSpot[playerPositions[z % a]];
	if (playerPositions[z % a] >= 100)
	won = true;
	}
	}
	for (int i = 0; i < a; ++i)
	cout << "Position of player " << i + 1 << " is " << playerPositions[i] << ".\n";
	}
	}

UVa 10530 - Guessing Game (use a 1D flag array)

Link: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=17&page=show_problem&problem=1471

Sol: 

#include <cstdio>
	#include <string.h>
	int main()
	{
	int max, min, guess;
	bool valid;
	char input[12];
	max = 11;
	min = 0;
	valid = true;
	while (scanf("%d", &guess), guess)
	{
	scanf("%*s %s", input);
	if (strcmp(input, "high") == 0)
	{
	if (guess <= min)
	valid = false;
	if (guess < max)
	max = guess;
	}
	else if (strcmp(input, "low") == 0)
	{
	if (guess >= max)
	valid = false;
	if (guess > min)
	min = guess;
	}
	else
	{
	if (guess > min && guess < max && valid)
	{
	printf("Stan may be honest\n");
	}
	else
	{
	printf("Stan is dishonest\n");
	}
	valid = true;
	min = 0;
	max = 11;
	}
	}
	}