제출 #91522

#제출 시각아이디문제언어결과실행 시간메모리
91522turbat말 (IOI15_horses)C++14
0 / 100
377 ms60124 KiB
#include <bits/stdc++.h> #include "horses.h" using namespace std; #define M 500005 int n, x[M], y[M]; long long tmp, mod = 1e9 + 7; struct segment{ int ans, mul; double a = 0, m = 0; } s[4 * M]; void update(int node, int l, int r, int idx, int valx, int valy){ if (idx < l || r < idx) return; if (l == r){ if (valx) x[l] = valx; if (valy) y[l] = valy; tmp = (1ll * x[l] * y[l]) % mod; s[node].ans = int(tmp); s[node].mul = x[l]; s[node].m = log10(x[l]); s[node].a = log(1ll * x[l] * y[l]); return; } int mid = (l + r)/2; update(node * 2, l, mid, idx, valx, valy); update(node * 2 + 1, mid + 1, r, idx, valx, valy); s[node].m = s[node * 2].m + s[node * 2 + 1].m; tmp = (1ll * s[node * 2].mul * s[node * 2 + 1].mul) % mod; s[node].mul = int(tmp); if (s[node * 2].a > s[node * 2 + 1].a + s[node * 2].m){ s[node].ans = s[node * 2].ans; s[node].a = s[node * 2].a; } else{ tmp = (1ll * s[node * 2 + 1].ans * s[node * 2].mul ) % mod; s[node].ans = int(tmp); s[node].a = s[node * 2 + 1].a + s[node * 2].m; } } int init(int N, int X[], int Y[]) { n = N; for (int i = 0;i < n;i++) update(1, 0, n - 1, i, X[i], Y[i]); return s[1].ans; } int updateX(int pos, int val) { update(1, 0, n - 1, pos, val, 0); return s[1].ans; } int updateY(int pos, int val) { update(1, 0, n - 1, pos, 0, val); return s[1].ans; }
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