Submission #641150

#	Time	Username	Problem	Language	Result	Execution time	Memory
641150		maks007	Game (eJOI20_game)	C++14	0 / 100	257 ms	524288 KiB

game

#include "bits/stdc++.h"

#define N (int)20

int cnt, n, m, used[N][N], deg[N][N];
char a[N][N], b[N][N];

void dfs(int i, int j) {
	used[i][j] = cnt;
	if(b[i][j] == '0') {
		int ni = i, nj = j - 1;
		if(ni >= 0 && ni < n && nj >= 0 && nj < m) dfs(ni, nj);
	}
	if(b[i][j+1] == '0') {
		int ni = i, nj = j + 1;
		if(ni >= 0 && ni < n && nj >= 0 && nj < m) dfs(ni, nj);
	}
	if(a[i][j] == '0') {
		int ni = i-1, nj = j;
		if(ni >= 0 && ni < n && nj >= 0 && nj < m) dfs(ni, nj);
	}
	if(a[i+1][j] == '0') {
		int ni = i+1, nj = j;
		if(ni >= 0 && ni < n && nj >= 0 && nj < m) dfs(ni, nj);
	}
}

signed main () {
	cnt = 1;
	scanf("%d%d", &n, &m);
	for(int i = 0; i <= n; i ++) {
		for(int j = 0; j < m; j ++) std::cin >> a[i][j];
	}
	for(int i = 0; i < n; i ++) {
		for(int j = 0; j <= m; j ++) std::cin >> b[i][j];
	}
	for(int i = 0; i < n; i ++ ) {
		for(int j = 0; j < m; j ++) {
			deg[i][j] += (a[i][j] == '1') + (a[i+1][j] == '1') + (b[i][j] == '1') + (b[i][j + 1] == '1');
		}
	}
	for(int i = 0; i < n; i ++) {
		for(int j = 0; j < m; j ++) {
			if(used[i][j] || deg[i][j] == 4) continue;
			dfs(i, j);
			cnt ++;
		}
	}
	int cnt1 = 0, cnt2 = 0;
	for(int i = 0; i < n; i ++) {
		for(int j = 0; j < m; j ++) {
			if(used[i][j] == 1) cnt1 ++;
			else if(used[i][j] == 2) cnt2 ++;
		}
	}
	if(std::min(cnt1, cnt2) == 0) printf("%d", -std::max(cnt1, cnt2));
	else 
	printf("%d", std::max(cnt1, cnt2) - std::min(cnt1, cnt2));
	return 0;
}

Compilation message (stderr)

game.cpp: In function 'int main()':
game.cpp:30:7: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   30 |  scanf("%d%d", &n, &m);
      |  ~~~~~^~~~~~~~~~~~~~~~

• Subtask 1: 0 / 20
• Subtask 2: 0 / 20
• Subtask 3: 0 / 20
• Subtask 4: 0 / 20
• Subtask 5: 0 / 20