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29 lines
596 B
29 lines
596 B
2 years ago
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#include <bits/stdc++.h>
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using namespace std;
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typedef __int128 LL;
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const int N = 1000010;
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int n, p;
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LL f[N];
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LL max(LL a, LL b) {
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if (a >= b) return a;
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return b;
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}
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int main() {
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cin >> n >> p;
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LL s = 0, mx = -1e36;
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for (int i = 1; i <= n; i++) {
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int x;
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cin >> x;
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s = max(s, 0) + x;
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mx = max(mx, s);
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f[i] = mx;
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}
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LL res = f[1], score = f[1] * 2;
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for (int i = 2; i <= n; i++) {
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res = max(res, score);
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if (f[i] > 0) score += f[i];
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}
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printf("%lld\n", res % p);
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return 0;
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}
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