문제 링크: https://www.acmicpc.net/problem/18268
18268번: Cow Gymnastics
The consistent pairs of cows are $(1,4)$, $(2,4)$, $(3,4)$, and $(1,3)$.
www.acmicpc.net
각각의 pair에 대해서 K sessions 동안 한마리가 다른 한마리보다 계속 등수가 앞서면 답을 1 증가시킴.
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#include <bits/stdc++.h>
using namespace std;
int N, K, ranking[11][21];
int main() {
ios_base::sync_with_stdio(0);
cin.tie(0);
cin >> K >> N;
for(int i = 0; i < K; i++) for(int j = 0; j < N; j++) {
int r;
cin >> r;
ranking[i][r] = j;
}
int ans = 0;
for(int i = 1; i <= N; i++) for(int j = 1; j <= N; j++) {
if(i == j) continue;
bool ok = true;
for(int k = 0; k < K; k++) {
if(ranking[k][i] > ranking[k][j]) ok = false;
}
if(ok) ans++;
}
cout << ans << '\n';
return 0;
}
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