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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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int n, sum = 0;
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cin >> n;
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bool b;
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for (int i = 1; i <= n; i++) {
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b = false; // 假设与7无关
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if (i % 7 == 0 || i % 10 == 7 || (i / 10 == 7))
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b = true; // 假设不成立
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if (!b) sum += i * i;
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}
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cout << sum;
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return 0;
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} |
