14 lines
252 B
C++
14 lines
252 B
C++
#include <bits/stdc++.h>
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using namespace std;
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int n, s;
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int main() {
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scanf("%d", &n);
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int ans = 0;
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for (int i = 1; i <= n; ++i) {
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scanf("%d", &s);
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if (s == i)
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ans++;
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}
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printf("%d\n", ans);
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return 0;
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} |