제출 #942622

#제출 시각아이디문제언어결과실행 시간메모리
942622adaawfSum Zero (RMI20_sumzero)C++17
100 / 100
939 ms19780 KiB
#include <iostream> #include <algorithm> using namespace std; int l[400005][2], f[400005]; pair<long long int, int> c[400005]; int main() { ios::sync_with_stdio(0); cin.tie(0); cout.tie(0); long long int n; cin >> n; for (int i = 1; i <= n; i++) { int x; cin >> x; c[i] = {c[i - 1].first + x, i}; f[i] = -1e9; } sort(c, c + n + 1); for (int i = 1; i <= n; i++) { if (c[i].first == c[i - 1].first) { f[c[i].second] = c[i - 1].second; } } f[0] = l[0][0] = -1; for (int i = 1; i <= n; i++) { f[i] = max(f[i - 1], f[i]); l[i][0] = f[i]; } for (int j = 0; j <= n; j++) { int h = j; for (int k = 0; k < 400; k++) { if (h == -1 || l[h][0] == -1) { h = -1; break; } else h = l[h][0]; } l[j][1] = h; } int q; cin >> q; for (int jj = 0; jj < q; jj++) { int x, y, res = 0; cin >> x >> y; for (int i = 1; i >= 0; i--) { if (y < x) break; int c = 1; for (int j = 1; j <= i; j++) c *= 400; while (l[y][i] >= x - 1) { y = l[y][i]; res += c; } } cout << res << '\n'; } }
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