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29 lines
862 B
C++
29 lines
862 B
C++
#define _CRT_SECURE_NO_WARNINGS
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#define _SILENCE_CXX17_C_HEADER_DEPRECATION_WARNING
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#include <bits/stdc++.h>
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using namespace std;
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int main() {
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ios::sync_with_stdio(false);
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int n, m;
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cin >> n >> m;
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vector<int> p(n);
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for (auto &x:p) cin >> x;
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vector<pair<int, int>> canswap(m);
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for (auto &x:canswap) cin >> x.first >> x.second;
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set<pair<int, int>> S(canswap.begin(), canswap.end());
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int targetval = *p.rbegin();
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for (int i = n - 1; i; i--)
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if (S.count(make_pair(p[i - 1], p[i]))) {
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swap(p[i - 1], p[i]);
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for (int j = i + 1; j < n; j++)
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if (S.count(make_pair(p[j - 1], p[j])))
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swap(p[j - 1], p[j]);
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else break;
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}
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cout << distance(p.rbegin(), find(p.rbegin(), p.rend(), targetval));
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return 0;
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}
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