moistx https://blog.hatena.ne.jp/moistx/ Logfiles https://logfiles.hatenablog.com/ LiveArchive 解答 凸が見つかったタイミングで回数をカウントすると良い。 #include <bits/stdc++.h> using namespace std; int main() { int Tc; cin >> Tc; while(Tc--) { int Tcnt; cin >> Tcnt; vector<int> vec(15); for(int i=0; i<15; i++) cin >> vec[i]; int ans = 0; for(int i=0; i<14; i++) ans += vec[i] < vec[i+1]; cout << Tcnt <<" "<< ans << endl… 190 <iframe src="https://hatenablog-parts.com/embed?url=https%3A%2F%2Flogfiles.hatenablog.com%2Fentry%2F20140902%2F1409644193" title="LiveArchive6465 Islands in the Data Stream - Logfiles" class="embed-card embed-blogcard" scrolling="no" frameborder="0" style="display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;"></iframe> Hatena Blog https://hatena.blog 2014-09-02 16:49:53 rich https://logfiles.hatenablog.com/entry/20140902/1409644193 1.0 100%