Frederick Chen
ebb7f9ba04
https://atcoder.jp/contests/abc391 Signed-off-by: Frederick Chen <seventeen@ohdragonboi.cn>
32 lines
584 B
C++
32 lines
584 B
C++
#include <iostream>
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#include <vector>
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using namespace std;
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int n, q, mp[10005], g[10005], cnt = 0, a, b, c;
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int main()
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{
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cin >> n >> q;
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for (int i = 0; i <= n; i++)
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{
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mp[i] = 1;
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g[i] = i;
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}
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while (q--)
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{
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cin >> a;
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if (a == 1)
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{
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cin >> b >> c;
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if (mp[g[b]] == 2)
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cnt--;
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if (mp[c] == 1)
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cnt++;
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mp[g[b]]--;
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mp[c]++;
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g[b] = c;
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}
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else if (a == 2)
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cout << cnt << endl;
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return 0;
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} |