제출 #234185

#제출 시각아이디문제언어결과실행 시간메모리
234185jhtan말 (IOI15_horses)C++14
17 / 100
1564 ms10148 KiB
#include "horses.h" #include <algorithm> using namespace std; const int MOD = 1000000007; int V[500000]; int XX[500000]; int YY[500000]; int n; int init(int N, int X[], int Y[]) { // For 17 points /* int V[N]; V[0] = X[0]; for(int i=1; i<N; i++) V[i] = V[i-1] * X[i]; int mx = 0; for(int i=0; i<N; i++) mx = max(mx, V[i] * Y[i]); */ n = N; for(int i=0; i<N; i++) { YY[i] = Y[i]; XX[i] = X[i]; } V[0] = X[0]; for(int i=1; i<N; i++) V[i] = (V[i-1] * X[i]) % MOD; int mx = 0; for(int i=0; i<N; i++) mx = max(mx, (V[i] * Y[i])) % MOD; return mx; } int updateX(int pos, int val) { XX[pos] = val; for(int i=pos; i<n; i++) V[i] = (V[i-1] * XX[i]) % MOD; int mx = 0; for(int i=0; i<n; i++) mx = max(mx, (V[i] * YY[i])) % MOD; return mx; } int updateY(int pos, int val) { YY[pos] = val; int mx = 0; for(int i=0; i<n; i++) mx = max(mx, (V[i] * YY[i])) % MOD; return mx; }
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