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746. 数组的左下半部分
https://www.acwing.com/problem/content/submission/code_detail/6861871/
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AcWing/746/746.cpp
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AcWing/746/746.cpp
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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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char op;
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double x, sum = 0;
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cin >> op;
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for (int i = 0; i < 12; i++) {
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for (int j = 0; j < 12; j++) {
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cin >> x;
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if (j < i) sum += x;
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}
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}
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cout << fixed << setprecision(1) << sum / (op == 'S' ? 1 : 66) << endl;
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return 0;
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}
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