#include #include int cmp_int (const void *ap, const void *bp) { int a = *(int *)ap; int b = *(int *)bp; if (a < b) { return -1; } if (a > b) { return 1; } return 0; } int main () { int n = 0; int h[200000][2] = {}; int t[200000][18] = {}; int q = 0; int a = 0; int b = 0; int res = 0; int max[18][200000] = {}; int org_h[200000] = {}; res = scanf("%d", &n); for (int i = 0; i < n; i++) { res = scanf("%d", h[i]); h[i][1] = i; org_h[i] = h[i][0]; } for (int i = 0; i < n; i++) { res = scanf("%d", t[i]); } qsort(h, n, sizeof(int)*2, cmp_int); max[0][0] = t[h[0][1]][0]; for (int j = 1; j < n; j++) { max[0][j] = t[h[j][1]][0]; if (max[0][j] < max[0][j-1]) { max[0][j] = max[0][j-1]; } } for (int i = 1; i < 18; i++) { for (int j = 0; j < n; j++) { int idx[2] = { -1, n }; while (idx[1]-idx[0] > 1) { int nxt = (idx[0]+idx[1])/2; if (h[nxt][0] <= t[j][i-1]) { idx[0] = nxt; } else { idx[1] = nxt; } } if (idx[0] < 0) { t[j][i] = t[j][i-1]; } else { t[j][i] = max[i-1][idx[0]]; } if (t[j][i] < t[j][i-1]) { t[j][i] = t[j][i-1]; } } max[i][0] = t[h[0][1]][i]; for (int j = 1; j < n; j++) { max[i][j] = t[h[j][1]][i]; if (max[i][j] < max[i][j-1]) { max[i][j] = max[i][j-1]; } } } res = scanf("%d", &q); while (q > 0) { int ans[2] = { 0, n+1 }; res = scanf("%d", &a); res = scanf("%d", &b); a--; b--; while (ans[1]-ans[0] > 1) { int nxt = (ans[0]+ans[1])/2; int cnt = 0; int tmp = 0; int org_nxt = nxt; while (nxt%2 == 0) { nxt /= 2; cnt++; } tmp = t[a][cnt]; nxt /= 2; cnt++; while (nxt > 0) { if (nxt%2 == 1) { int idx[2] = { -1, n }; while (idx[1]-idx[0] > 1) { int nidx = (idx[0]+idx[1])/2; if (h[nidx][0] <= tmp) { idx[0] = nidx; } else { idx[1] = nidx; } } if (idx[0] >= 0 && max[cnt][idx[0]] > tmp) { tmp = max[cnt][idx[0]]; } } nxt /= 2; cnt++; } if (org_h[b] <= tmp) { ans[1] = org_nxt; } else { ans[0] = org_nxt; } } if (ans[1] > n) { printf("-1\n"); } else { printf("%d\n", ans[1]); } q--; } return 0; }