The 16th question of codeforces water question 100 codeforces Round #164 (Div. 2) A. Games (brute force)

Title Link: Http://www.codeforces.com/problemset/problem/268/A
Test instructions: If the home team's home shirt is the same as the away shirt in the football match, then ask the team to put on their jerseys, now there are N teams, each team's home shirt and the color of the go shirt tell you, they are 22 more than a game. The number of matches where the home team wears away jerseys.
C + + code:

#include <iostream>using namespacestd;Const intMAXN = -;intX[MAXN], Y[MAXN], n, ans;intMain () {CIN>>N;  for(inti =0; i< N; i++) Cin>> X[i] >>Y[i];  for(inti =0; i< N;i + +)         for(intj =0; j<n; J + +)        {            if(i = = j)Continue; if(X[i] = =Y[j]) ans++; } cout<<ans; return 0;}

C + +

The 16th question of codeforces water question 100 codeforces Round #164 (Div. 2) A. Games (brute force)