CCF CSP 201512-2：消除类游戏

代码如下：

#include <bits/stdc++.h>

using namespace std;

//消除游戏 
int main(){
	int n, m;
	cin >> n >> m;
	vector< vector<int> > v(n, vector<int>(m));
	for(int i = 0; i < n; i++){
		for(int j = 0; j < m; j++){
			cin >> v[i][j];
		}
	}

    vector< pair<int, int> > index;
	for(int i = 0; i < n; i++){
		for(int j = 0; j < m - 2; j++){
			if(v[i][j] == v[i][j+1] && v[i][j+1] == v[i][j+2]){
				index.push_back(pair<int, int>(i, j));
				index.push_back(pair<int, int>(i, j+1));
				index.push_back(pair<int, int>(i, j+2));
			}
		}
	}
	
	for(int j = 0; j < m; j++){
		for(int i = 0; i < n - 2; i++){
			if(v[i][j] == v[i+1][j] && v[i+1][j] == v[i+2][j]){
				index.push_back(pair<int, int>(i, j));
				index.push_back(pair<int, int>(i+1, j));
				index.push_back(pair<int, int>(i+2, j));
			}
		}
	}
	for(int i = 0; i < index.size(); i++){
		int a = index[i].first, b = index[i].second;
		v[a][b] = 0;
	}
	
	for(int i = 0; i < n; i++){
		for(int j = 0; j < m; j++){
			cout << v[i][j] << " ";
		}
		cout << endl;
	}
	return 0;		
}